Mercurial > forge
changeset 6710:bef8870c47f1 octave-forge
OctPROJ upload (correct version)
author | jgpallero |
---|---|
date | Mon, 15 Feb 2010 08:08:22 +0000 |
parents | ee6969c608d7 |
children | fd92006d6f07 |
files | main/octproj/COPYING main/octproj/ChangeLog main/octproj/DESCRIPTION main/octproj/INDEX main/octproj/doc/octproj.pdf main/octproj/doc/octproj.tex main/octproj/inst/op_fwd.m main/octproj/inst/op_geoc2geod.m main/octproj/inst/op_geod2geoc.m main/octproj/inst/op_inv.m main/octproj/inst/op_transform.m main/octproj/src/Makefile main/octproj/src/_op_fwd.cc main/octproj/src/_op_geoc2geod.cc main/octproj/src/_op_geod2geoc.cc main/octproj/src/_op_inv.cc main/octproj/src/_op_transform.cc main/octproj/src/projwrap.c main/octproj/src/projwrap.h |
diffstat | 19 files changed, 3154 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/COPYING Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. By contrast, +the GNU General Public License is intended to guarantee your freedom to +share and change all versions of a program--to make sure it remains free +software for all its users. We, the Free Software Foundation, use the +GNU General Public License for most of our software; it applies also to +any other work released this way by its authors. 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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/ChangeLog Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,116 @@ +changeset: 22:1ff84dc91041 +tag: tip +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Feb 09 10:52:42 2010 +0100 +summary: Use fortran_vec() method instead const_cast<double*> to obtain pointers and improve the use of warning function + +changeset: 21:2f1c7488eace +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 17:43:12 2010 +0100 +summary: Date change + +changeset: 20:671ddf3e2a77 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 17:40:53 2010 +0100 +summary: Change criteria for catching errors + +changeset: 19:bcdb32b735f9 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 17:40:41 2010 +0100 +summary: Update documentation + +changeset: 18:a402765a20b8 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 17:39:59 2010 +0100 +summary: Change criteria for catching errors + +changeset: 17:56e3823d72cf +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 15:43:48 2010 +0100 +summary: Changes in test sentences and auxiliary subfunctions + +changeset: 16:045b046bc43a +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 14:04:26 2010 +0100 +summary: Changes in test sentences + +changeset: 15:91f6ea5161f7 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 13:59:59 2010 +0100 +summary: Testing input arguments with auxiliary subfunctions + +changeset: 14:13ef8e3568c5 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Sat Feb 06 12:37:57 2010 +0100 +summary: Comment correction + +changeset: 13:6cf0c2c16261 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Jan 19 10:17:13 2010 +0100 +summary: Documentation update + +changeset: 12:8e2c9f00c63c +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 22 18:43:50 2009 +0100 +summary: Changes in parsing input arguments + +changeset: 11:56d5916bed60 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 22 17:39:28 2009 +0100 +summary: Update general documentation + +changeset: 10:1391300aa003 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Fri Dec 18 08:56:04 2009 +0100 +summary: Change in general documentation + +changeset: 9:d41ef12f4913 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Thu Dec 17 12:04:54 2009 +0100 +summary: Add tex documentation file + +changeset: 8:3bcfd7da0c87 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 17:06:48 2009 +0100 +summary: Correction in documentation + +changeset: 7:4ea6a2cb26ba +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:56:19 2009 +0100 +summary: Comment the function and small changes + +changeset: 6:39501324d391 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:54:23 2009 +0100 +summary: Style correction + +changeset: 5:791641326573 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:53:52 2009 +0100 +summary: Creation of op_transform.m + +changeset: 4:6ccec5b0b0b5 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:52:54 2009 +0100 +summary: Comment corrections + +changeset: 3:63eb65628b12 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:51:40 2009 +0100 +summary: Add support to check if input arguments are both scalars or vectors and add support to convert scalars in column vectors if neccessary + +changeset: 2:29774e2ea3b5 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:49:46 2009 +0100 +summary: Comments corrections and add support to convert scalars in column vectors if neccessary + +changeset: 1:6b515a6b5933 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 16:47:15 2009 +0100 +summary: Change date + +changeset: 0:d89be78337c2 +user: José Luis García Pallero <jgpallero@gmail.com> +date: Tue Dec 15 12:29:46 2009 +0100 +summary: Creating Mercurial repository for OctPROJ +
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/DESCRIPTION Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,13 @@ +Name: OctPROJ +Version: 1.0.0 +Date: 2010-02-06 +Author: José Luis García Pallero, <jgpallero@gmail.com> +Maintainer: José Luis García Pallero, <jgpallero@gmail.com> +Title: GNU Octave bindings to PROJ.4 +Description: This package allows to call functions of PROJ.4 library for + cartographic projections transformations. +Depends: Octave (>= 2.9.7) +Url: http://trac.osgeo.org/proj/ http://octave.sourceforge.net/index.html +Autoload: yes +License: GPL version 3 or later (PROJ.4 is under MIT license) +SystemRequirements: libproj-dev (>= 4.7.0) (Debian system)
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/INDEX Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,13 @@ +toolbox >> OctPROJ +Category Kernel functions + _op_transform + _op_fwd + _op_inv + _op_geod2geoc + _op_geoc2geod +Category Driver functions + op_transform + op_fwd + op_inv + op_geod2geoc + op_geoc2geod
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/doc/octproj.tex Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,277 @@ +\documentclass[10pt,a4paper]{article} +\usepackage{tocbibind} +\usepackage{hyperref} +\hypersetup{colorlinks,citecolor=red,linkcolor=red,urlcolor=red} + +\newcommand{\octproj}{\texttt{OctPROJ}} +\newcommand{\proj}{\texttt{PROJ.4}} +\newcommand{\octave}{GNU Octave} + +\title{\octproj\\Calling \proj{} from \octave\footnote{This document is + distributed under the terms of the GNU Free Documentation License. + Please, see \url{http://www.gnu.org/licenses/}}} +\author{Jos\'e Luis Garc\'ia Pallero\footnote{Instituto de Astronom\'ia y + Geodesia, Fac. de CC Matem\'aticas, Universidad Complutense de Madrid. + \texttt{jlgpallero@pdi.ucm.es}, \texttt{jgpallero@gmail.com}}} +\date{\today} + +\begin{document} +\maketitle +% \tableofcontents + +\nocite{eat-om} +\nocite{projman} +\nocite{projir1} +\nocite{projir2} +\nocite{sny-wm} + +\begin{abstract} +This is a small introduction to using the \octproj{} package. In this text, you +can overview the basic usage of the functions in +\octave\footnote{\url{http://www.octave.org}}. If you need a detailed +description about the options and available projections, please visit the +\proj{} website\footnote{\url{http://trac.osgeo.org/proj}}. +\end{abstract} + +\section{Overview} + +\octproj{} allows you to perform cartographic projections in \octave{} using +\proj{} library. You can take the power of \proj{} using the facilities that +\octave{} provides, without know the internals of the \proj{} C API. You can use +the conversion programs coming with \proj{} distribution, but for use them in +\octave{} you must make system calls. With \octproj{}, \proj{} can be integrated +in \octave{} scripts in a natural way. + +\section{Installation} + +As several \octave{} packages, \octproj{} installation consists in compiling the +C++ kernel sources (see section \ref{op-kw}), link them against \octave{} +library to generate \texttt{*.oct} functions and copy this \texttt{*.oct} +executables and other \texttt{*.m} functions into a working directory. + +The automatic procedure can be easily done by running the command: + +\begin{verbatim} +octave:1> pkg install octproj-x.x.x.tar.gz +\end{verbatim} +where \texttt{x.x.x} is the version number. + +After that, the functions and documentation are installed in your machine and +you are ready for use the package. + +\section{Kernel wrapper} +\label{op-kw} + +The main functions (the functions which make the actual computations) are +programmed in a separate files: \texttt{projwrap.h} and \texttt{projwrap.c}. + +The files contain three functions: +\begin{itemize} +\item \texttt{proj\_fwd}: forward computation of geodetic to projected + coordinates. +\item \texttt{proj\_inv}: inverse computation of projected to geodetic + coordinates. +\item \texttt{proj\_transform}: general transformations. Is possible to make + forward, inverse and other transformations using only one function (see + \proj{} documentation). +\end{itemize} + +\subsection{Error handling} + +Error handling in the kernel wrapper is based on error codes from \proj. +Functions in \texttt{projwrap} return the \proj{} error code and the \proj{} +text string error message, which can be catched in order to work in this case. + +The functions can stop the execution in presence of errors depending on the +nature of the error. +\begin{itemize} +\item If exist an error involving a general parameter of the projection, the + execution stops. +\item If an error is found due to a wrong or out of domain input coordinate, the + execution don't stops, but the error code is activated and the output + transformed coordinate corresponding to the error position have a special + value. +\end{itemize} + +\section{\octave{} functions} + +Two types of functions are programmed for \octave: \texttt{*.oct} functions and +\texttt{*.m} functions. + +\subsection{\texttt{*.oct} functions} +\label{op-of} + +These functions are linked with \texttt{projwrap}. You can use it, but is no +recommended because the input arguments are more strict (always column vectors) +than \texttt{*.m} functions and don't check for errors. + +The functions are: +\begin{itemize} +\item \texttt{\_op\_geod2geoc}: transformation between geodetic and cartesian + geocentric coordinates. This function calls directly \proj. +\item \texttt{\_op\_geoc2geod}: transformation between cartesian geocentric + and geodetic coordinates. This function calls directly \proj. +\item \texttt{\_op\_fwd}: forward projection (calls \texttt{proj\_fwd}). +\item \texttt{\_op\_inv}: inverse projection (calls \texttt{proj\_inv}). +\item \texttt{\_op\_transform}: general transformation (calls + \texttt{proj\_transform}). +\end{itemize} + +\subsection{\texttt{*.m} functions} + +These functions make the computations by calling the \texttt{*.oct} functions. +You must call these functions because you can use various types of input +(scalars, vectors or matrices) and checking of input arguments (data type, +dimensions) is performed. + +The functions are the same as in section \ref{op-of} (without the \texttt{\_} at +the beginning of the name): +\begin{itemize} +\item \texttt{op\_geod2geoc}: calls \texttt{\_op\_geod2geoc}. +\item \texttt{op\_geoc2geod}: calls \texttt{\_op\_geoc2geod}. +\item \texttt{op\_fwd}: calls \texttt{\_op\_fwd}. +\item \texttt{op\_inv}: calls \texttt{\_op\_inv}. +\item \texttt{op\_transform}: calls \texttt{\_op\_transform}. +\end{itemize} + +\subsection{Error handling} + +\texttt{*.oct} and \texttt{*.m} functions can emit errors or warnings, some due +to errors in input arguments and other due to errors in functions from +\texttt{projwrap} kernel execution (see section \ref{op-kw}). + +Errors due to wrong input arguments (data types, dimensions, etc.) can be only +given for \texttt{*.m} functions and this is the reason because the use of these +functions are recommended. In this case, the execution is aborted and nothing is +stored in output arguments. + +Errors due to the execution of \texttt{projwrap} kernel can be emitted for both +\texttt{*.oct} and \texttt{*.m} functions. If the error is due to an erroneous +projection parameter, the execution is aborted and nothing is stored in output +arguments; but if the error is due to a wrong or out of domain input coordinate, +a warning is emitted and the execution has a normal end. + +\section{Examples} + +\subsection{Geodetic to geocentric and vice versa} + +\begin{verbatim} +lon=-6*pi/180;lat=43*pi/180;h=1000; +[x,y,z]=op_geod2geoc(lon,lat,h,6378388,1/297) +x = 4647300.72326257 +y = -488450.988568138 +z = 4328259.36425774 + +[lon,lat,h]=op_geoc2geod(x,y,z,6378388,1/297); +lon*=180/pi,lat*=180/pi,h +lon = -6 +lat = 43 +h = 1000.00000000074 +\end{verbatim} + +\subsection{Forward and inverse projection} + +\begin{verbatim} +lon=-6*pi/180;lat=43*pi/180; +[x,y]=op_fwd(lon,lat,'+proj=utm +lon_0=3w +ellps=GRS80') +x = 255466.980547577 +y = 4765182.93268401 + +[lon,lat]=op_inv(x,y,'+proj=utm +lon_0=3w +ellps=GRS80'); +lon*=180/pi,lat*=180/pi +lon = -6.00000000003597 +lat = 42.9999999999424 +\end{verbatim} + +\subsection{Forward and inverse projection: \texttt{op\_transform}} + +\subsubsection{With altitude} + +\begin{verbatim} +lon=-6*pi/180;lat=43*pi/180;h=1000; +[x,y,h]=op_transform(lon,lat,h,'+proj=latlong +ellps=GRS80',... + '+proj=utm +lon_0=3w +ellps=GRS80') +x = 255466.980547577 +y = 4765182.93268401 +h = 1000 + +[lon,lat,h]=op_transform(x,y,h,... + '+proj=utm +lon_0=3w +ellps=GRS80',... + '+proj=latlong +ellps=GRS80'); +lon*=180/pi,lat*=180/pi,h +lon = -6.00000000003597 +lat = 42.9999999999424 +h = 1000 +\end{verbatim} + +\subsubsection{Without altitude} + +\begin{verbatim} +lon=-6*pi/180;lat=43*pi/180; +[x,y]=op_transform(lon,lat,'+proj=latlong +ellps=GRS80',... + '+proj=utm +lon_0=3w +ellps=GRS80') +x = 255466.980547577 +y = 4765182.93268401 + +[lon,lat]=op_transform(x,y,'+proj=utm +lon_0=3w +ellps=GRS80',... + '+proj=latlong +ellps=GRS80'); +lon*=180/pi,lat*=180/pi +lon = -6.00000000003597 +lat = 42.9999999999424 +\end{verbatim} + +\subsection{Error due to an erroneous parameter} + +\begin{verbatim} +lon=-6*pi/180;lat=43*pi/180; +[x,y]=op_fwd(lon,lat,'+proj=utm +lon_0=3w +ellps=GRS8') +error: + In function op_fwd: + In function _op_fwd: + Projection parameters + unknown elliptical parameter name + +proj=utm +lon_0=3w +ellps=GRS8 +\end{verbatim} + +\subsection{Error due to latitude too big} + +\begin{verbatim} +lon=[-6*pi/180;-6*pi/180];lat=[43*pi/180;43]; +[x,y]=op_fwd(lon,lat,'+proj=utm +lon_0=3w +ellps=GRS80') +warning: _op_fwd: + +warning: Projection error in point 2 (index starts at 1) +x = + + 255466.980547577 + Inf + +y = + + 4765182.93268401 + Inf +\end{verbatim} + +\begin{thebibliography}{99} +\bibitem{eat-om} \textsc{Eaton}, John W.; \textsc{Bateman}, David, and + \textsc{Hauberg}, S\o{}ren; GNU Octave. A high-level interactive + language for numerical computations; Edition 3 for Octave + version 3.2.3; July 2007; Permanently updated at + \url{http://www.gnu.org/software/octave/docs.html}. +\bibitem{projman} \textsc{Evenden}, Gerald I.; Cartographic Projection + Procedures for the UNIX Environment---A User's Manual; USGS + Open-File Report 90-284; 2003; + \url{ftp://ftp.remotesensing.org/proj/OF90-284.pdf}. +\bibitem{projir1} \textsc{Evenden}, Gerald I.; Cartographic Projection + Procedures Release 4, Interim Report; 2003; + \url{ftp://ftp.remotesensing.org/proj/proj.4.3.pdf}. +\bibitem{projir2} \textsc{Evenden}, Gerald I.; Cartographic Projection + Procedures Release 4, Second Interim Report; 2003; + \url{ftp://ftp.remotesensing.org/proj/proj.4.3.I2.pdf}. +\bibitem{sny-wm} \textsc{Snyder}, John Parr; Map Projections: A Working Manual; + USGS series, Professional Paper 1395; Geological Survey + (U. S.), 1987; + \url{http://pubs.er.usgs.gov/usgspubs/pp/pp1395}. +\end{thebibliography} + +\end{document}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/inst/op_fwd.m Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,159 @@ +## Copyright (C) 2009, 2010, José Luis García Pallero, <jgpallero@gmail.com> +## +## This file is part of OctPROJ. +## +## OctPROJ is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## This program is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## <http://www.gnu.org/licenses/>. + +## -*- texinfo -*- +## @deftypefn {Function File}{[@var{X},@var{Y}] =}op_fwd(@var{lon},@var{lat},@var{params}) +## +## This function projects geodetic coordinates into cartesian projected +## coordinates in the defined cartographic projection using the PROJ.4 function +## pj_fwd(). +## +## @var{lon} contains the geodetic longitude, in radians. +## @var{lat} contains the geodetic latitude, in radians. +## @var{params} is a text string containing the projection parameters in PROJ.4 +## format. +## +## @var{lon} or @var{lat} can be scalars, vectors or matrices with equal +## dimensions. +## +## @var{X} is the X projected coordinates. +## @var{Y} is the Y projected coordinates. +## +## If a projection error occurs, the resultant coordinates for the affected +## points have both Inf value and a warning message is emitted (one for each +## erroneous point). +## @seealso{op_inv, op_transform} +## @end deftypefn + + + + +function [X,Y] = op_fwd(lon,lat,params) + +try + functionName = 'op_fwd'; + argumentNumber = 3; + +%******************************************************************************* +%NUMBER OF INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %number of input arguments checking + if nargin~=argumentNumber + error(['Incorrect number of input arguments (%d)\n\t ',... + 'Correct number of input arguments = %d'],... + nargin,argumentNumber); + end + +%******************************************************************************* +%INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %checking input arguments + [lon,lat,rowWork,colWork] = checkInputArguments(lon,lat,params); +catch + %error message + error('\n\tIn function %s:\n\t -%s ',functionName,lasterr); +end + +%******************************************************************************* +%COMPUTATION +%******************************************************************************* + +try + %calling oct function + [X,Y] = _op_fwd(lon,lat,params); + %convert output vectors in matrices of adequate size + X = reshape(X,rowWork,colWork); + Y = reshape(Y,rowWork,colWork); +catch + %error message + error('\n\tIn function %s:\n\tIn function %s ',functionName,lasterr); +end + + + + +%******************************************************************************* +%AUXILIARY FUNCTION +%******************************************************************************* + + + + +function [a,b,rowWork,colWork] = checkInputArguments(a,b,params) + +%a must be matrix type +if ismatrix(a) + %a dimensions + [rowA,colA] = size(a); +else + error('The first input argument is not numeric'); +end +%b must be matrix type +if ismatrix(b) + %b dimensions + [rowB,colB] = size(b); +else + error('The second input argument is not numeric'); +end +%checking a and b dimensions +if (rowA~=rowB)|(colA~=colB) + error('The dimensions of input arguments are not the same'); +else + %working dimensions + rowWork = rowA; + colWork = colA; + %convert a and b in column vectors + a = reshape(a,rowWork*colWork,1); + b = reshape(b,rowWork*colWork,1); +end +%params must be a text string +if ~ischar(params) + error('The third input argument is not a text string'); +end + + + + +%*****END OF FUNCIONS***** + + + + +%*****FUNCTION TESTS***** + + + + +%!test +%! [x,y]=op_fwd(-6*pi/180,43*pi/180,'+proj=utm +lon_0=3w +ellps=GRS80'); +%! assert(x,255466.98,1e-2) +%! assert(y,4765182.93,1e-2) +%!error(op_fwd) +%!error(op_fwd(1,2,3,4)) +%!error(op_fwd('string',2,3)) +%!error(op_fwd(1,'string',3)) +%!error(op_fwd(1,2,3)) +%!error(op_fwd([1 1;2 2],2,'+proj=utm +lon_0=3w +ellps=GRS80')) +%!error(op_fwd(1,[2 2;3 3],'+proj=utm +lon_0=3w +ellps=GRS80')) + + + + +%*****END OF TESTS*****
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/inst/op_geoc2geod.m Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,179 @@ +## Copyright (C) 2009, 2010, José Luis García Pallero, <jgpallero@gmail.com> +## +## This file is part of OctPROJ. +## +## OctPROJ is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## This program is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## <http://www.gnu.org/licenses/>. + +## -*- texinfo -*- +## @deftypefn {Function File}{[@var{lon},@var{lat},@var{h}] =}op_geoc2geod(@var{X},@var{Y},@var{Z},@var{a},@var{f}) +## +## This function converts cartesian tridimensional geocentric coordinates into +## geodetic coordinates using the PROJ.4 function pj_geocentric_to_geodetic(). +## +## @var{X} contains the X geocentric coordinate. +## @var{Y} contains the Y geocentric coordinate. +## @var{Z} contains the Z geocentric coordinate. +## @var{a} is a scalar containing the semi-major axis of the ellipsoid. +## @var{f} is a scalar containing the flattening of the ellipsoid. +## +## @var{X}, @var{Y} or @var{Z} can be scalars, vectors or matrices with equal +## dimensions. +## The units of @var{X}, @var{Y}, @var{Z} and @var{a} must be the same. +## +## @var{lon} is the geodetic longitude, in radians. +## @var{lat} is the geodetic latitude, in radians. +## @var{h} is the ellipsoidal height, in the same units of @var{a}. +## +## @seealso{op_geod2geoc} +## @end deftypefn + + + + +function [lon,lat,h] = op_geoc2geod(X,Y,Z,a,f) + +try + functionName = 'op_geoc2geod'; + argumentNumber = 5; + +%******************************************************************************* +%NUMBER OF INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %number of input arguments checking + if nargin~=argumentNumber + error(['Incorrect number of input arguments (%d)\n\t ',... + 'Correct number of input arguments = %d'],... + nargin,argumentNumber); + end + +%******************************************************************************* +%INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %checking input arguments + [X,Y,Z,rowWork,colWork] = checkInputArguments(X,Y,Z,a,f); +catch + %error message + error('\n\tIn function %s:\n\t -%s ',functionName,lasterr); +end + +%******************************************************************************* +%COMPUTATION +%******************************************************************************* + +try + %first squared eccentricity of the ellipsoid + e2 = 2.0*f-f^2; + %calling oct function + [lon,lat,h] = _op_geoc2geod(X,Y,Z,a,e2); + %convert output vectors in matrices of adequate size + lon = reshape(lon,rowWork,colWork); + lat = reshape(lat,rowWork,colWork); + h = reshape(h,rowWork,colWork); +catch + %error message + error('\n\tIn function %s:\n\tIn function %s ',functionName,lasterr); +end + + + + +%******************************************************************************* +%AUXILIARY FUNCTION +%******************************************************************************* + + + + +function [a,b,c,rowWork,colWork] = checkInputArguments(a,b,c,d,e) + +%a must be matrix type +if ismatrix(a) + %a dimensions + [rowA,colA] = size(a); +else + error('The first input argument is not numeric'); +end +%b must be matrix type +if ismatrix(b) + %b dimensions + [rowB,colB] = size(b); +else + error('The second input argument is not numeric'); +end +%c must be matrix type +if ismatrix(c) + %b dimensions + [rowC,colC] = size(c); +else + error('The third input argument is not numeric'); +end +%d must be scalar +if ~isscalar(d) + error('The fourth input argument is not a scalar'); +end +%e must be scalar +if ~isscalar(e) + error('The fifth input argument is not a scalar'); +end +%checking a, b and c dimensions +if (max([rowA rowB rowC])~=min([rowA rowB rowC]))|... + (max([colA colB colC])~=min([colA colB colC])) + error('The dimensions of input arguments are not the same'); +else + %working dimensions + rowWork = rowA; + colWork = colA; + %convert a, b and c in column vectors + a = reshape(a,rowWork*colWork,1); + b = reshape(b,rowWork*colWork,1); + c = reshape(c,rowWork*colWork,1); +end + + + + +%*****END OF FUNCIONS***** + + + + +%*****FUNCTION TESTS***** + + + + +%!test +%! [lon,lat,h]=op_geoc2geod(2587045.819,1879598.809,5501461.606,6378388,1/297); +%! assert(lon,0.628318530616265,1e-11) +%! assert(lat,1.04719755124682,1e-11) +%! assert(h,999.999401183799,1e-5) +%!error(op_geoc2geod) +%!error(op_geoc2geod(1,2,3,4,5,6)) +%!error(op_geoc2geod('string',2,3,4,5)) +%!error(op_geoc2geod(1,'string',3,4,5)) +%!error(op_geoc2geod(1,2,'string',4,5)) +%!error(op_geoc2geod(1,2,3,[4 4],5)) +%!error(op_geoc2geod(1,2,3,4,[5 5])) +%!error(op_geoc2geod([1 1;2 2],2,3,4,5)) +%!error(op_geoc2geod(1,[2 2;3 3],3,4,5)) +%!error(op_geoc2geod(1,2,[3 3;4 4],4,5)) +%!error(op_geoc2geod([1;1],[2 2 2],3,4,5)) + + + + +%*****END OF TESTS*****
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/inst/op_geod2geoc.m Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,179 @@ +## Copyright (C) 2009, 2010, José Luis García Pallero, <jgpallero@gmail.com> +## +## This file is part of OctPROJ. +## +## OctPROJ is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## This program is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## <http://www.gnu.org/licenses/>. + +## -*- texinfo -*- +## @deftypefn {Function File}{[@var{X},@var{Y},@var{Z}] =}op_geod2geoc(@var{lon},@var{lat},@var{h},@var{a},@var{f}) +## +## This function converts geodetic coordinates into cartesian tridimensional +## geocentric coordinates using the PROJ.4 function pj_geodetic_to_geocentric(). +## +## @var{lon} contains the geodetic longitude, in radians. +## @var{lat} contains the geodetic latitude, in radians. +## @var{h} contains the ellipsoidal height. +## @var{a} is a scalar containing the semi-major axis of the ellipsoid. +## @var{f} is a scalar containing the flattening of the ellipsoid. +## +## @var{lon}, @var{lat} or @var{h} can be scalars, vectors or matrices with +## equal dimensions. +## The units of @var{h} and @var{a} must be the same. +## +## @var{X} is the X geocentric coordinate, in the same units of @var{a}. +## @var{Y} is the Y geocentric coordinate, in the same units of @var{a}. +## @var{Z} the Z geocentric coordinate, in the same units of @var{a}. +## +## @seealso{op_geoc2geod} +## @end deftypefn + + + + +function [X,Y,Z] = op_geod2geoc(lon,lat,h,a,f) + +try + functionName = 'op_geod2geoc'; + argumentNumber = 5; + +%******************************************************************************* +%NUMBER OF INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %number of input arguments checking + if nargin~=argumentNumber + error(['Incorrect number of input arguments (%d)\n\t ',... + 'Correct number of input arguments = %d'],... + nargin,argumentNumber); + end + +%******************************************************************************* +%INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %checking input arguments + [lon,lat,h,rowWork,colWork] = checkInputArguments(lon,lat,h,a,f); +catch + %error message + error('\n\tIn function %s:\n\t -%s ',functionName,lasterr); +end + +%******************************************************************************* +%COMPUTATION +%******************************************************************************* + +try + %first squared eccentricity of the ellipsoid + e2 = 2.0*f-f^2; + %calling oct function + [X,Y,Z] = _op_geod2geoc(lon,lat,h,a,e2); + %convert output vectors in matrices of adequate size + X = reshape(X,rowWork,colWork); + Y = reshape(Y,rowWork,colWork); + Z = reshape(Z,rowWork,colWork); +catch + %error message + error('\n\tIn function %s:\n\tIn function %s ',functionName,lasterr); +end + + + + +%******************************************************************************* +%AUXILIARY FUNCTION +%******************************************************************************* + + + + +function [a,b,c,rowWork,colWork] = checkInputArguments(a,b,c,d,e) + +%a must be matrix type +if ismatrix(a) + %a dimensions + [rowA,colA] = size(a); +else + error('The first input argument is not numeric'); +end +%b must be matrix type +if ismatrix(b) + %b dimensions + [rowB,colB] = size(b); +else + error('The second input argument is not numeric'); +end +%c must be matrix type +if ismatrix(c) + %b dimensions + [rowC,colC] = size(c); +else + error('The third input argument is not numeric'); +end +%d must be scalar +if ~isscalar(d) + error('The fourth input argument is not a scalar'); +end +%e must be scalar +if ~isscalar(e) + error('The fifth input argument is not a scalar'); +end +%checking a, b and c dimensions +if (max([rowA rowB rowC])~=min([rowA rowB rowC]))|... + (max([colA colB colC])~=min([colA colB colC])) + error('The dimensions of input arguments are not the same'); +else + %working dimensions + rowWork = rowA; + colWork = colA; + %convert a, b and c in column vectors + a = reshape(a,rowWork*colWork,1); + b = reshape(b,rowWork*colWork,1); + c = reshape(c,rowWork*colWork,1); +end + + + + +%*****END OF FUNCIONS***** + + + + +%*****FUNCTION TESTS***** + + + + +%!test +%! [x,y,z]=op_geod2geoc(pi/5,pi/3,1000,6378388,1/297); +%! assert(x,2587045.81927379,1e-5) +%! assert(y,1879598.80960088,1e-5) +%! assert(z,5501461.60635409,1e-5) +%!error(op_geod2geoc) +%!error(op_geod2geoc(1,2,3,4,5,6)) +%!error(op_geod2geoc('string',2,3,4,5)) +%!error(op_geod2geoc(1,'string',3,4,5)) +%!error(op_geod2geoc(1,2,'string',4,5)) +%!error(op_geod2geoc(1,2,3,[4 4],5)) +%!error(op_geod2geoc(1,2,3,4,[5 5])) +%!error(op_geod2geoc([1 1;2 2],2,3,4,5)) +%!error(op_geod2geoc(1,[2 2;3 3],3,4,5)) +%!error(op_geod2geoc(1,2,[3 3;4 4],4,5)) +%!error(op_geod2geoc([1;1],[2 2 2],3,4,5)) + + + + +%*****END OF TESTS*****
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/inst/op_inv.m Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,158 @@ +## Copyright (C) 2009, 2010, José Luis García Pallero, <jgpallero@gmail.com> +## +## This file is part of OctPROJ. +## +## OctPROJ is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## This program is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## <http://www.gnu.org/licenses/>. + +## -*- texinfo -*- +## @deftypefn {Function File}{[@var{lon},@var{lat}] =}op_inv(@var{X},@var{Y},@var{params}) +## +## This function unprojects cartesian projected coordinates (in a defined +## cartographic projection) into geodetic coordinates using the PROJ.4 function +## pj_inv(). +## +## @var{X} contains the X projected coordinates. +## @var{Y} contains the Y projected coordinates. +## @var{params} is a text string containing the projection parameters in PROJ.4 +## format. +## +## @var{X} or @var{Y} can be scalars, vectors or matrices with equal dimensions. +## +## @var{lon} is the geodetic longitude, in radians. +## @var{lat} is the geodetic latitude, in radians. +## +## If a projection error occurs, the resultant coordinates for the affected +## points have both Inf value and a warning message is emitted (one for each +## erroneous point). +## @seealso{op_fwd, op_transform} +## @end deftypefn + + + + +function [lon,lat] = op_inv(X,Y,params) + +try + functionName = 'op_inv'; + argumentNumber = 3; + +%******************************************************************************* +%NUMBER OF INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %number of input arguments checking + if nargin~=argumentNumber + error(['Incorrect number of input arguments (%d)\n\t ',... + 'Correct number of input arguments = %d'],... + nargin,argumentNumber); + end + +%******************************************************************************* +%INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %checking input arguments + [X,Y,rowWork,colWork] = checkInputArguments(X,Y,params); +catch + %error message + error('\n\tIn function %s:\n\t -%s ',functionName,lasterr); +end + +%******************************************************************************* +%COMPUTATION +%******************************************************************************* + +try + %calling oct function + [lon,lat] = _op_inv(X,Y,params); + %convert output vectors in matrices of adequate size + lon = reshape(lon,rowWork,colWork); + lat = reshape(lat,rowWork,colWork); +catch + %error message + error('\n\tIn function %s:\n\tIn function %s ',functionName,lasterr); +end + + + + +%******************************************************************************* +%AUXILIARY FUNCTION +%******************************************************************************* + + + + +function [a,b,rowWork,colWork] = checkInputArguments(a,b,params) + +%a must be matrix type +if ismatrix(a) + %a dimensions + [rowA,colA] = size(a); +else + error('The first input argument is not numeric'); +end +%b must be matrix type +if ismatrix(b) + %b dimensions + [rowB,colB] = size(b); +else + error('The second input argument is not numeric'); +end +%checking a and b dimensions +if (rowA~=rowB)|(colA~=colB) + error('The dimensions of input arguments are not the same'); +else + %working dimensions + rowWork = rowA; + colWork = colA; + %convert a and b in column vectors + a = reshape(a,rowWork*colWork,1); + b = reshape(b,rowWork*colWork,1); +end +%params must be a text string +if ~ischar(params) + error('The third input argument is not a text string'); +end + + + + +%*****END OF FUNCIONS***** + + + + +%*****FUNCTION TESTS***** + + + + +%!test +%! [lon,lat]=op_inv(255466.98,4765182.93,'+proj=utm +lon_0=3w +ellps=GRS80'); +%! assert(lon*180/pi,-6,1e-7) +%! assert(lat*180/pi,43,1e-7) +%!error(op_inv) +%!error(op_inv(1,2,3,4)) +%!error(op_inv('string',2,3)) +%!error(op_inv(1,'string',3)) +%!error(op_inv(1,2,3)) +%!error(op_inv([1 1;2 2],2,'+proj=utm +lon_0=3w +ellps=GRS80')) +%!error(op_inv(1,[2 2;3 3],'+proj=utm +lon_0=3w +ellps=GRS80')) + + + + +%*****END OF TESTS*****
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/inst/op_transform.m Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,216 @@ +## Copyright (C) 2009, 2010, José Luis García Pallero, <jgpallero@gmail.com> +## +## This file is part of OctPROJ. +## +## OctPROJ is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 3 of the License, or (at +## your option) any later version. +## +## This program is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +## General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Octave; see the file COPYING. If not, see +## <http://www.gnu.org/licenses/>. + +## -*- texinfo -*- +## @deftypefn {Function File}{[@var{X2},@var{Y2},@var{Z2}] =}op_transform(@var{X1},@var{Y1},@var{Z1},@var{par1},@var{par2}) +## @deftypefnx {Function File}{[@var{X2},@var{Y2}] =}op_transform(@var{X1},@var{Y1},@var{par1},@var{par2}) +## +## This function transforms X/Y/Z, lon/lat/h points between two coordinate +## systems 1 and 2 using the PROJ.4 function pj_transform(). +## +## @var{X1} contains the first coordinates in the source coordinate system. If +## @var{X1} is geodetic longitude, it must be expressed in radians. +## @var{Y1} contains the second coordinates in the source coordinate system. If +## @var{Y1} is geodetic latitude, it must be expressed in radians. +## @var{Z1} contains the third coordinates in the source coordinate system. +## @var{par1} is a text string containing the projection parameters for the +## source system, in PROJ.4 format. +## @var{par2} is a text string containing the projection parameters for the +## destination system, in PROJ.4 format. +## +## @var{X1}, @var{Y1} or @var{X1} can be scalars, vectors or matrices with +## equal dimensions. +## +## @var{X2} is the first coordinate in the destination coordinate system. If +## @var{X2} is geodetic longitude, it is output in radians. +## @var{Y2} is the second coordinate in the destination coordinate system. If +## @var{Y2} is geodetic longitude, it is output in radians. +## @var{Z2} is the third coordinate in the destination coordinate system. If +## argument @var{Z1} was omitted, this value is an empty matrix. +## +## @seealso{op_fwd, op_inv} +## @end deftypefn + + + + +function [X2,Y2,Z2] = op_transform(X1,Y1,Z1,par1,par2) + +try + functionName = 'op_transform'; + minArgNumber = 4; + maxArgNumber = 5; + +%******************************************************************************* +%NUMBER OF INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %number of input arguments checking + if (nargin<minArgNumber)|(nargin>maxArgNumber) + error(['Incorrect number of input arguments (%d)\n\t ',... + 'Correct number of input arguments = %d or %d'],... + nargin,minArgNumber,maxArgNumber); + end + +%******************************************************************************* +%INPUT ARGUMENTS CHECKING +%******************************************************************************* + + %checking input arguments + if nargin==minArgNumber + par2 = par1; + par1 = Z1; + Z1 = []; + end + [X1,Y1,Z1,rowWork,colWork] = checkInputArguments(X1,Y1,Z1,par1,par2); +catch + %error message + error('\n\tIn function %s:\n\t -%s ',functionName,lasterr); +end + +%******************************************************************************* +%COMPUTATION +%******************************************************************************* + +try + %calling oct function + [X2,Y2,Z2] = _op_transform(X1,Y1,Z1,par1,par2); + %convert output vectors in matrices of adequate size + X2 = reshape(X2,rowWork,colWork); + Y2 = reshape(Y2,rowWork,colWork); + if nargin==maxArgNumber + Z2 = reshape(Z2,rowWork,colWork); + end +catch + %error message + error('\n\tIn function %s:\n\tIn function %s ',functionName,lasterr); +end + + + + +%******************************************************************************* +%AUXILIARY FUNCTION +%******************************************************************************* + + + + +function [a,b,c,rowWork,colWork] = checkInputArguments(a,b,c,par1,par2) + +%a must be matrix type +if ismatrix(a) + %a dimensions + [rowA,colA] = size(a); +else + error('The first input argument is not numeric'); +end +%b must be matrix type +if ismatrix(b) + %b dimensions + [rowB,colB] = size(b); +else + error('The second input argument is not numeric'); +end +%c must be matrix type +if isnumeric(c) + %c dimensions + if isempty(c) + rowC = 0; + colC = 0; + else + [rowC,colC] = size(c); + end +else + error('The third/fourth input argument is not numeric'); +end +%checking a, b and c dimensions +if (max([rowA rowB])~=min([rowA rowB]))|(max([colA colB])~=min([colA colB])) + error('The dimensions of input arguments are not the same'); +else + %working dimensions + rowWork = rowA; + colWork = colA; + if (rowC~=0)&(colC~=0) + if (rowC==rowWork)&(colC==colWork) + c = reshape(c,rowWork*colWork,1); + else + error('The dimensions of input arguments are not the same'); + end + else + c = zeros(0,1); + end + %convert a and b in column vectors + a = reshape(a,rowWork*colWork,1); + b = reshape(b,rowWork*colWork,1); +end +%params must be a text string +if ~ischar(par1) + error('The fourth/fifth input argument is not a text string'); +end +if ~ischar(par2) + error('The last input argument is not a text string'); +end + + + + +%*****FUNCTION TESTS***** + + + + +%!test +%! [x,y,h]=op_transform(-6*pi/180,43*pi/180,1000,... +%! '+proj=latlong +ellps=GRS80',... +%! '+proj=utm +lon_0=3w +ellps=GRS80'); +%! [lon,lat,H]=op_transform(x,y,h,'+proj=utm +lon_0=3w +ellps=GRS80',... +%! '+proj=latlong +ellps=GRS80'); +%! assert(x,255466.98,1e-2) +%! assert(y,4765182.93,1e-2) +%! assert(h,1000.0,1e-15) +%! assert(lon*180/pi,-6,1e-8) +%! assert(lat*180/pi,43,1e-8) +%! assert(H,1000.0,1e-15) +%!test +%! [x,y]=op_transform(-6*pi/180,43*pi/180,'+proj=latlong +ellps=GRS80',... +%! '+proj=utm +lon_0=3w +ellps=GRS80'); +%! [lon,lat]=op_transform(x,y,'+proj=utm +lon_0=3w +ellps=GRS80',... +%! '+proj=latlong +ellps=GRS80'); +%! assert(x,255466.98,1e-2) +%! assert(y,4765182.93,1e-2) +%! assert(lon*180/pi,-6,1e-8) +%! assert(lat*180/pi,43,1e-8) +%!error(op_transform) +%!error(op_transform(1,2,3,4,5,6)) +%!error(op_transform('string',2,3,4,5)) +%!error(op_transform(1,'string',3,4,5)) +%!error(op_transform(1,2,'string',4,5)) +%!error(op_transform(1,2,3,'string',5)) +%!error(op_transform(1,2,3,4,'string')) +%!error(op_transform([1 1;2 2],2,3,'+proj=latlong +ellps=GRS80',... +%! '+proj=utm +lon_0=3w +ellps=GRS80')) +%!error(op_transform(1,[2 2;3 3],3,'+proj=latlong +ellps=GRS80',... +%! '+proj=utm +lon_0=3w +ellps=GRS80')) +%!error(op_transform(1,2,[3 3;4 4],'+proj=latlong +ellps=GRS80',... +%! '+proj=utm +lon_0=3w +ellps=GRS80')) + + + + +%*****END OF TESTS*****
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/Makefile Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,16 @@ +.PHONY: all +all: compile clean + +.PHONY: compile +compile: + cc -c -O3 -Wall -Wextra projwrap.c -o projwrap.o + mkoctfile -s -Wall -Wextra _op_transform.cc projwrap.o -lproj + mkoctfile -s -Wall -Wextra _op_fwd.cc projwrap.o -lproj + mkoctfile -s -Wall -Wextra _op_inv.cc projwrap.o -lproj + mkoctfile -s -Wall -Wextra _op_geod2geoc.cc -lproj + mkoctfile -s -Wall -Wextra _op_geoc2geod.cc -lproj + +.PHONY: clean +clean: + rm _op_transform.o _op_fwd.o _op_inv.o _op_geod2geoc.o _op_geoc2geod.o + rm projwrap.o
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/_op_fwd.cc Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,155 @@ +/* -*- coding: utf-8 -*- */ +/* Copyright (C) 2009 José Luis García Pallero, <jgpallero@gmail.com> + * + * This file is part of OctPROJ. + * + * OctPROJ is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + */ +/******************************************************************************/ +/******************************************************************************/ +#define HELPTEXT "\ +-*- texinfo -*-\n\ +@deftypefn{Loadable Function}{[@var{X},@var{Y}] =}\ +_op_fwd(@var{lon},@var{lat},@var{params})\n\ +\n\ +@cindex Performs forward projection step.\n\ +\n\ +This function projects geodetic coordinates into cartesian projected\n\ +coordinates in the defined cartographic projection using the PROJ.4 function \ +pj_fwd().\n\ +\n\ +@var{lon} is a column vector containing the geodetic longitude, in radians.\n\ +@var{lat} is a column vector containing the geodetic latitude, in radians.\n\ +@var{params} is a text string containing the projection parameters in PROJ.4 \ +format.\n\ +\n\ +The coordinate vectors @var{lon} and @var{lat} must be both scalars or both\n\ +column vectors (of the same size).\n\ +\n\ +@var{X} is a column vector containing the X projected coordinates.\n\ +@var{Y} is a column vector containing the Y projected coordinates.\n\ +\n\ +If a projection error occurs, the resultant coordinates for the affected\n\ +points have both Inf value and a warning message is emitted (one for each\n\ +erroneous point).\n\ +@seealso{_op_inv, _op_transform}\n\ +@end deftypefn" +/******************************************************************************/ +/******************************************************************************/ +#include<octave/oct.h> +#include<cstdio> +#include<cstring> +#include<cstdlib> +#include<cmath> +#include"projwrap.h" +/******************************************************************************/ +/******************************************************************************/ +#define ERRORTEXT 1000 +/******************************************************************************/ +/******************************************************************************/ +DEFUN_DLD(_op_fwd,args,,HELPTEXT) +{ + //error message + char errorText[ERRORTEXT]="_op_fwd:\n\t"; + //output list + octave_value_list outputList; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //checking input arguments + if(args.length()!=3) + { + //error text + sprintf(&errorText[strlen(errorText)], + "Incorrect number of input arguments\n\t" + "See help _op_fwd"); + //error message + error(errorText); + } + else + { + //error code + int idErr=0; + //error in projection + int projectionError=0; + //loop index + size_t i=0; + //geodetic coordinates + ColumnVector lon=args(0).column_vector_value(); + ColumnVector lat=args(1).column_vector_value(); + //projection parameters + std::string params=args(2).string_value(); + //number of elements + size_t nElem=static_cast<size_t>(lon.rows()); + //projected coordinates + ColumnVector xOut(nElem); + ColumnVector yOut(nElem); + //computation vectors + double* x=NULL; + double* y=NULL; + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //copy input data + for(i=0;i<nElem;i++) + { + xOut(i) = lon(i); + yOut(i) = lat(i); + } + //pointers to output data + x = xOut.fortran_vec(); + y = yOut.fortran_vec(); + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //projection + idErr = proj_fwd(x,y,nElem,params.c_str(),&errorText[strlen(errorText)], + &projectionError); + //error checking + if(idErr||projectionError) + { + //type of error + if(projectionError) + { + //warning message + warning(errorText); + //positions of projection errors + for(i=0;i<nElem;i++) + { + //testing for HUGE_VAL + if((x[i]==HUGE_VAL)||(y[i]==HUGE_VAL)) + { + //error text + warning("Projection error in point %d " + "(index starts at 1)",i+1); + } + } + } + else + { + //error message + error(errorText); + //exit + return outputList; + } + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //output parameters list + outputList(0) = xOut; + outputList(1) = yOut; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return outputList; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/_op_geoc2geod.cc Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,139 @@ +/* -*- coding: utf-8 -*- */ +/* Copyright (C) 2009 José Luis García Pallero, <jgpallero@gmail.com> + * + * This file is part of OctPROJ. + * + * OctPROJ is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + */ +/******************************************************************************/ +/******************************************************************************/ +#define HELPTEXT "\ +-*- texinfo -*-\n\ +@deftypefn{Loadable Function}{[@var{lon},@var{lat},@var{h}] =}\ +_op_geod2geoc(@var{X},@var{Y},@var{Z},@var{a},@var{e2})\n\ +\n\ +@cindex Geocentric to geodetic coordinates.\n\ +\n\ +This function converts cartesian tridimensional geodentric coordinates into \n\ +geodetic using the PROJ.4 function pj_geocentric_to_geodetic().\n\ +\n\ +@var{X} is a column vector containing the X geocentric coordinate.\n\ +@var{Y} is a column vector containing the Y geocentric coordinate.\n\ +@var{Z} is a column vector containing the Z geocentric coordinate.\n\ +@var{a} is a scalar containing the semi-major axis of the ellipsoid.\n\ +@var{e2} is a scalar containing the squared first eccentricity of the \ +ellipsoid.\n\ +\n\ +The coordinate vectors @var{X}, @var{Y} and @var{Z} must be all scalars or\n\ +all column vectors (of the same size).\n\ +The units of @var{X}, @var{Y}, @var{Z} and @var{a} must be the same.\n\ +\n\ +@var{lon} is a column vector containing the geodetic longitude, in radians.\n\ +@var{lat} is a column vector containing the geodetic latitude, in radians.\n\ +@var{h} is a column vector containing the ellipsoidal height, in the same\n\ +units of @var{a},\n\ +@seealso{_op_geod2geoc}\n\ +@end deftypefn" +/******************************************************************************/ +/******************************************************************************/ +#include<octave/oct.h> +#include<proj_api.h> +#include<cstring> +#include<cstdlib> +/******************************************************************************/ +/******************************************************************************/ +#define ERRORTEXT 1000 +/******************************************************************************/ +/******************************************************************************/ +DEFUN_DLD(_op_geoc2geod,args,,HELPTEXT) +{ + //error message + char errorText[ERRORTEXT]="_op_geoc2geod:\n\t"; + //output list + octave_value_list outputList; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //testing input parameters + if(args.length()!=5) + { + //error text + sprintf(&errorText[strlen(errorText)], + "Incorrect number of input arguments\n\t" + "See help _op_geoc2geod"); + //error message + error(errorText); + } + else + { + //error code + int* idError=NULL; + //loop index + size_t i=0; + //geocentric coordinates + ColumnVector x=args(0).column_vector_value(); + ColumnVector y=args(1).column_vector_value(); + ColumnVector z=args(2).column_vector_value(); + //ellipsoidal parameters + double a=args(3).double_value(); + double e2=args(4).double_value(); + //number of elements + size_t nElem=static_cast<size_t>(x.rows()); + //geodetic coordinates + ColumnVector latOut(nElem); + ColumnVector lonOut(nElem); + ColumnVector hOut(nElem); + //computation vectors + double* lat=NULL; + double* lon=NULL; + double* h=NULL; + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //copy input data + for(i=0;i<nElem;i++) + { + lonOut(i) = x(i); + latOut(i) = y(i); + hOut(i) = z(i); + } + //pointers to data + lat = latOut.fortran_vec(); + lon = lonOut.fortran_vec(); + h = hOut.fortran_vec(); + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //transformation + if(pj_geocentric_to_geodetic(a,e2,nElem,1,lon,lat,h)) + { + //get error code + idError = pj_get_errno_ref(); + //error text + sprintf(&errorText[strlen(errorText)],"%s",pj_strerrno(*idError)); + //error message + error(errorText); + //exit + return outputList; + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //output parameters list + outputList(0) = lonOut; + outputList(1) = latOut; + outputList(2) = hOut; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return outputList; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/_op_geod2geoc.cc Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,141 @@ +/* -*- coding: utf-8 -*- */ +/* Copyright (C) 2009 José Luis García Pallero, <jgpallero@gmail.com> + * + * This file is part of OctPROJ. + * + * OctPROJ is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + */ +/******************************************************************************/ +/******************************************************************************/ +#define HELPTEXT "\ +-*- texinfo -*-\n\ +@deftypefn{Loadable Function}{[@var{X},@var{Y},@var{Z}] =}\ +_op_geod2geoc(@var{lon},@var{lat},@var{h},@var{a},@var{e2})\n\ +\n\ +@cindex Geodetic to geocentric coordinates.\n\ +\n\ +This function converts geodetic coordinates into cartesian tridimensional\n\ +geocentric coordinates using the PROJ.4 function pj_geodetic_to_geocentric().\n\ +\n\ +@var{lon} is a column vector containing the geodetic longitude, in radians.\n\ +@var{lat} is a column vector containing the geodetic latitude, in radians.\n\ +@var{h} is a column vector containing the ellipsoidal height.\n\ +@var{a} is a scalar containing the semi-major axis of the ellipsoid.\n\ +@var{e2} is a scalar containing the squared first eccentricity of the \ +ellipsoid.\n\ +\n\ +The coordinate vectors @var{lon}, @var{lat} and @var{h} must be all scalars\n\ +or all column vectors (of the same size).\n\ +The units of @var{h} and @var{a} must be the same.\n\ +\n\ +@var{X} is a column vector containing the X geocentric coordinate, in the same \ +units of @var{a}.\n\ +@var{Y} is a column vector containing the Y geocentric coordinate, in the same \ +units of @var{a}.\n\ +@var{Z} is a column vector containing the Z geocentric coordinate, in the same \ +units of @var{a}.\n\ +@seealso{_op_geoc2geod}\n\ +@end deftypefn" +/******************************************************************************/ +/******************************************************************************/ +#include<octave/oct.h> +#include<proj_api.h> +#include<cstring> +#include<cstdlib> +/******************************************************************************/ +/******************************************************************************/ +#define ERRORTEXT 1000 +/******************************************************************************/ +/******************************************************************************/ +DEFUN_DLD(_op_geod2geoc,args,,HELPTEXT) +{ + //error message + char errorText[ERRORTEXT]="_op_geod2geoc:\n\t"; + //output list + octave_value_list outputList; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //checking input arguments + if(args.length()!=5) + { + //error text + sprintf(&errorText[strlen(errorText)], + "Incorrect number of input arguments\n\t" + "See help _op_geod2geoc"); + //error message + error(errorText); + } + else + { + //error code + int* idError=NULL; + //loop index + size_t i=0; + //geodetic coordinates + ColumnVector lon=args(0).column_vector_value(); + ColumnVector lat=args(1).column_vector_value(); + ColumnVector h=args(2).column_vector_value(); + //ellipsoidal parameters + double a=args(3).double_value(); + double e2=args(4).double_value(); + //number of elements + size_t nElem=static_cast<size_t>(lon.rows()); + //geocentric coordinates + ColumnVector xOut(nElem); + ColumnVector yOut(nElem); + ColumnVector zOut(nElem); + //computation vectors + double* x=NULL; + double* y=NULL; + double* z=NULL; + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //copy input data + for(i=0;i<nElem;i++) + { + xOut(i) = lon(i); + yOut(i) = lat(i); + zOut(i) = h(i); + } + //pointers to output data + x = xOut.fortran_vec(); + y = yOut.fortran_vec(); + z = zOut.fortran_vec(); + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //transformation + if(pj_geodetic_to_geocentric(a,e2,nElem,1,x,y,z)) + { + //get error code + idError = pj_get_errno_ref(); + //error text + sprintf(&errorText[strlen(errorText)],"%s",pj_strerrno(*idError)); + //error message + error(errorText); + //exit + return outputList; + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //output parameters list + outputList(0) = xOut; + outputList(1) = yOut; + outputList(2) = zOut; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return outputList; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/_op_inv.cc Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,155 @@ +/* -*- coding: utf-8 -*- */ +/* Copyright (C) 2009 José Luis García Pallero, <jgpallero@gmail.com> + * + * This file is part of OctPROJ. + * + * OctPROJ is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + */ +/******************************************************************************/ +/******************************************************************************/ +#define HELPTEXT "\ +-*- texinfo -*-\n\ +@deftypefn{Loadable Function}{[@var{lon},@var{lat}] =}\ +_op_inv(@var{X},@var{Y},@var{params})\n\ +\n\ +@cindex Performs inverse projection step.\n\ +\n\ +This function unprojects cartesian projected coordinates (in a defined\n\ +cartographic projection) into geodetic coordinates using the PROJ.4 function \ +pj_inv().\n\ +\n\ +@var{X} is a column vector containing the X projected coordinates.\n\ +@var{Y} is a column vector containing the Y projected coordinates.\n\ +@var{params} is a text string containing the projection parameters in PROJ.4 \ +format.\n\ +\n\ +The coordinate vectors @var{X} and @var{Y} must be both scalars or both\n\ +column vectors (of the same size).\n\ +\n\ +@var{lon} is a column vector containing the geodetic longitude, in radians.\n\ +@var{lat} is a column vector containing the geodetic latitude, in radians.\n\ +\n\ +If a projection error occurs, the resultant coordinates for the affected\n\ +points have both Inf value and a warning message is emitted (one for each\n\ +erroneous point).\n\ +@seealso{_op_fwd, _op_transform}\n\ +@end deftypefn" +/******************************************************************************/ +/******************************************************************************/ +#include<octave/oct.h> +#include<cstdio> +#include<cstring> +#include<cstdlib> +#include<cmath> +#include"projwrap.h" +/******************************************************************************/ +/******************************************************************************/ +#define ERRORTEXT 1000 +/******************************************************************************/ +/******************************************************************************/ +DEFUN_DLD(_op_inv,args,,HELPTEXT) +{ + //error message + char errorText[ERRORTEXT]="_op_inv:\n\t"; + //output list + octave_value_list outputList; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //checking input arguments + if(args.length()!=3) + { + //error text + sprintf(&errorText[strlen(errorText)], + "Incorrect number of input arguments\n\t" + "See help _op_inv"); + //error message + error(errorText); + } + else + { + //error code + int idErr=0; + //error in projection + int projectionError=0; + //loop index + size_t i=0; + //projected coordinates + ColumnVector X=args(0).column_vector_value(); + ColumnVector Y=args(1).column_vector_value(); + //projection parameters + std::string params=args(2).string_value(); + //number of elements + size_t nElem=static_cast<size_t>(X.rows()); + //geodetic coordinates + ColumnVector lonOut(nElem); + ColumnVector latOut(nElem); + //computation vectors + double* lon=NULL; + double* lat=NULL; + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //copy input data + for(i=0;i<nElem;i++) + { + lonOut(i) = X(i); + latOut(i) = Y(i); + } + //pointers to output data + lon = lonOut.fortran_vec(); + lat = latOut.fortran_vec(); + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //projection + idErr = proj_inv(lon,lat,nElem,params.c_str(),&errorText[strlen(errorText)], + &projectionError); + //error checking + if(idErr||projectionError) + { + //type of error + if(projectionError) + { + //warning message + warning(errorText); + //positions of projection errors + for(i=0;i<nElem;i++) + { + //testing for HUGE_VAL + if((lon[i]==HUGE_VAL)||(lat[i]==HUGE_VAL)) + { + //error text + warning("Projection error in point %d " + "(index starts at 1)",i+1); + } + } + } + else + { + //error message + error(errorText); + //exit + return outputList; + } + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //output parameters list + outputList(0) = lonOut; + outputList(1) = latOut; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return outputList; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/_op_transform.cc Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,153 @@ +/* -*- coding: utf-8 -*- */ +/* Copyright (C) 2009 José Luis García Pallero, <jgpallero@gmail.com> + * + * This file is part of OctPROJ. + * + * OctPROJ is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. + */ +/******************************************************************************/ +/******************************************************************************/ +#define HELPTEXT "\ +-*- texinfo -*-\n\ +@deftypefn{Loadable Function}{[@var{X2},@var{Y2},@var{Z2}] =}\ +_op_transform(@var{X1},@var{Y1},@var{Z1},@var{par1},@var{par2})\n\ +\n\ +@cindex Performs transformation between two coordinate systems.\n\ +\n\ +This function transforms X/Y/Z, lon/lat/h points between two coordinate\n\ +systems 1 and 2 using the PROJ.4 function pj_transform().\n\ +\n\ +@var{X1} is a column vector containing the first coordinates in the source\n\ +coordinate system. If @var{X1} is geodetic longitude, it must be passed in \ +radians.\n\ +@var{Y1} is a column vector containing the second coordinates in the source\n\ +coordinate system. If @var{Y1} is geodetic latitude, it must be passed in \ +radians.\n\ +@var{Z1} is a column vector containing the third first coordinates in the\n\ +source coordinate system.\n\ +@var{par1} is a text string containing the projection parameters for the\n\ +source system, in PROJ.4 format.\n\ +@var{par2} is a text string containing the projection parameters for the\n\ +destination system, in PROJ.4 format.\n\ +\n\ +The coordinate vectors @var{X1}, @var{Y1} and @var{Z1} must be all scalars or\n\ +all column vectors (of the same size).\n\ +\n\ +@var{X2} is a column vector containing the first coordinates in the\n\ +destination coordinate system. If @var{X2} is geodetic longitude, it is\n\ +output in radians.\n\ +@var{Y2} is a column vector containing the second coordinates in the\n\ +destination coordinate system. If @var{Y2} is geodetic longitude, it is\n\ +output in radians.\n\ +@var{Z2} is a column vector containing the third coordinates in the\n\ +destination coordinate system.\n\ +\n\ +@seealso{_op_fwd, _op_inv}\n\ +@end deftypefn" +/******************************************************************************/ +/******************************************************************************/ +#include<octave/oct.h> +#include<cstdio> +#include<cstring> +#include<cstdlib> +#include<cmath> +#include"projwrap.h" +/******************************************************************************/ +/******************************************************************************/ +#define ERRORTEXT 1000 +/******************************************************************************/ +/******************************************************************************/ +DEFUN_DLD(_op_transform,args,,HELPTEXT) +{ + //error message + char errorText[ERRORTEXT]="_op_transform:\n\t"; + //output list + octave_value_list outputList; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //checking input arguments + if(args.length()!=5) + { + //error text + sprintf(&errorText[strlen(errorText)], + "Incorrect number of input arguments\n\t" + "See help _op_transform"); + //error message + error(errorText); + } + else + { + //loop index + size_t i=0; + //input coordinates from GNU Octave + ColumnVector xIn=args(0).column_vector_value(); + ColumnVector yIn=args(1).column_vector_value(); + ColumnVector zIn=args(2).column_vector_value(); + //parameters strings + std::string paramsStart=args(3).string_value(); + std::string paramsEnd=args(4).string_value(); + //number of imput data + size_t nElem=static_cast<size_t>(xIn.rows()); + size_t nElemZ=static_cast<size_t>(zIn.rows()); + //output coordinates for GNU Octave + ColumnVector xOut(nElem); + ColumnVector yOut(nElem); + ColumnVector zOut(nElemZ); + //pointers to output data + double* x=NULL; + double* y=NULL; + double* z=NULL; + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //copy input data in working arrays + for(i=0;i<nElem;i++) + { + xOut(i) = xIn(i); + yOut(i) = yIn(i); + if(nElemZ) + { + zOut(i) = zIn(i); + } + } + //pointers to output data + x = xOut.fortran_vec(); + y = yOut.fortran_vec(); + if(nElemZ) + { + z = zOut.fortran_vec(); + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //transformation + if(proj_transform(x,y,z,nElem,nElemZ,paramsStart.c_str(), + paramsEnd.c_str(),&errorText[strlen(errorText)])) + { + //error message + error(errorText); + //exit + return outputList; + } + //////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////// + //adding results to output list + outputList(0) = xOut; + outputList(1) = yOut; + outputList(2) = zOut; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return outputList; +}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/projwrap.c Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,261 @@ +/* -*- coding: utf-8 -*- */ +/** +\ingroup octproj +@{ +\file projwrap.c +\brief Functions definition for PROJ4 wrapper. +\author José Luis García Pallero, jgpallero@gmail.com +\date 05-12-2009 +\section License License +This program is free software. You can redistribute it and/or modify it under +the terms of the GNU General Public License (GPL) as published by the Free +Software Foundation (FSF), either version 3 of the License, or (at your option) +any later version. +You can obtain a copy of the GPL or contact with the FSF in: http://www.fsf.org +or http://www.gnu.org +*/ +/******************************************************************************/ +/******************************************************************************/ +#include"projwrap.h" +/******************************************************************************/ +/******************************************************************************/ +int proj_fwd(double* lon, + double* lat, + const size_t nElem, + const char params[], + char errorText[], + int* projectionError) +{ + //error code + int* idErr=NULL; + //index for loop + size_t i=0; + //input and output coordinates + projXY data; + //proj structure + projPJ pjStruct; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //projection initialization + pjStruct = pj_init_plus(params); + if(!pjStruct) + { + //error code + idErr = pj_get_errno_ref(); + //error text + sprintf(errorText,"Projection parameters\n\t%s\n\t%s", + pj_strerrno(*idErr),params); + //exit + return *idErr; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //projection error initialization + *projectionError = 0; + //transformation + for(i=0;i<nElem;i++) + { + //assign input coordinates + data.u = lon[i]; + data.v = lat[i]; + //projection + data = pj_fwd(data,pjStruct); + //testing of results + if((data.u==HUGE_VAL)||(data.v==HUGE_VAL)) + { + //assign error code + idErr = pj_get_errno_ref(); + //error text (only the first time) + if(i==0) + { + //error text + sprintf(errorText,"Projection error\n\t%s",pj_strerrno(*idErr)); + } + //projection error identificator + *projectionError = 1; + } + //assign output coordinates + lon[i] = data.u; + lat[i] = data.v; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //memory free + pj_free(pjStruct); + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + if(*projectionError) + { + return *idErr; + } + else + { + return 0; + } +} +/******************************************************************************/ +/******************************************************************************/ +int proj_inv(double* x, + double* y, + const size_t nElem, + const char params[], + char errorText[], + int* projectionError) +{ + //error code + int* idErr=NULL; + //index for loop + size_t i=0; + //input and output coordinates + projXY data; + //proj structure + projPJ pjStruct; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //projection initialization + pjStruct = pj_init_plus(params); + if(!pjStruct) + { + //error code + idErr = pj_get_errno_ref(); + //error text + sprintf(errorText,"Projection parameters\n\t%s\n\t%s", + pj_strerrno(*idErr),params); + //exit + return *idErr; + } + //test if inverse step exist + if(pjStruct->inv==0) + { + //error text + sprintf(errorText,"Inverse step do no exists\n\t%s",params); + //exit + return PROJWRAP_ERR_NOT_INV_PROJ; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //projection error initialization + *projectionError = 0; + //transformation + for(i=0;i<nElem;i++) + { + //assign input coordinates + data.u = x[i]; + data.v = y[i]; + //projection + data = pj_inv(data,pjStruct); + //testing of results + if((data.u==HUGE_VAL)||(data.v==HUGE_VAL)) + { + //assign error code + idErr = pj_get_errno_ref(); + //error text (only the first time) + if(i==0) + { + //error text + sprintf(errorText,"Projection error\n\t%s",pj_strerrno(*idErr)); + } + //projection error identificator + *projectionError = 1; + } + //assign output coordinates + x[i] = data.u; + y[i] = data.v; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //memory free + pj_free(pjStruct); + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + if(*projectionError) + { + return *idErr; + } + else + { + return 0; + } +} +/******************************************************************************/ +/******************************************************************************/ +int proj_transform(double* x, + double* y, + double* z, + const size_t nElem, + const size_t nElemZ, + const char paramsStart[], + const char paramsEnd[], + char errorText[]) +{ + //error codes + int* idErr1=NULL; + int idErr2=0; + //proj structures + projPJ pjStart; + projPJ pjEnd; + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //start projection initialization + pjStart = pj_init_plus(paramsStart); + if(!pjStart) + { + //error code + idErr1 = pj_get_errno_ref(); + //error text + sprintf(errorText,"Start system parameters\n\t%s\n\t%s", + pj_strerrno(*idErr1),paramsStart); + //exit + return *idErr1; + } + //end projection initialization + pjEnd = pj_init_plus(paramsEnd); + if(!pjEnd) + { + //error code + idErr1 = pj_get_errno_ref(); + //error text + sprintf(errorText,"End system parameters\n\t%s\n\t%s", + pj_strerrno(*idErr1),paramsEnd); + //free memory + pj_free(pjStart); + //exit + return *idErr1; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //transformation + if(nElemZ) + { + idErr2 = pj_transform(pjStart,pjEnd,nElem,1,x,y,z); + } + else + { + idErr2 = pj_transform(pjStart,pjEnd,nElem,1,x,y,NULL); + } + //catching possible errors + if(idErr2) + { + //error text + sprintf(errorText,"Projection error\n\t%s",pj_strerrno(idErr2)); + //memory free + pj_free(pjStart); + pj_free(pjEnd); + //exit + return idErr2; + } + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //memory free + pj_free(pjStart); + pj_free(pjEnd); + //////////////////////////////////////////////////////////////////////////// + //////////////////////////////////////////////////////////////////////////// + //exit + return idErr2; +} +/******************************************************************************/ +/******************************************************************************/ +/** @} */
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main/octproj/src/projwrap.h Mon Feb 15 08:08:22 2010 +0000 @@ -0,0 +1,150 @@ +/* -*- coding: utf-8 -*- */ +/** +\defgroup octproj octPROJ module +@{ +\file projwrap.h +\brief Functions declaration for PROJ4 wrapper. +\author José Luis García Pallero, jgpallero@gmail.com +\date 05-12-2009 +\section License License +This program is free software. You can redistribute it and/or modify it under +the terms of the GNU General Public License (GPL) as published by the Free +Software Foundation (FSF), either version 3 of the License, or (at your option) +any later version. +You can obtain a copy of the GPL or contact with the FSF in: http://www.fsf.org +or http://www.gnu.org +*/ +/******************************************************************************/ +/******************************************************************************/ +#ifndef _PROJWRAP_H_ +#define _PROJWRAP_H_ +/******************************************************************************/ +/******************************************************************************/ +#include<stdio.h> +#include<stdlib.h> +#include<math.h> +#include<projects.h> +/******************************************************************************/ +/******************************************************************************/ +#ifdef __cplusplus +extern "C" { +#endif +/******************************************************************************/ +/******************************************************************************/ +#define PROJWRAP_ERR_NOT_INV_PROJ 10001 +/******************************************************************************/ +/******************************************************************************/ +/** +\brief Wrapper around pj_fwd. +\param[in,out] lon Array containing the geodetic longitude, in radians. On + output, this argument contains the X projected coordinates. +\param[in,out] lat Array containing the geodetic latitude, in radians. On + output, this argument contains the Y projected coordinates. +\param[in] nElem Number of elements in \em lon and \em lat arrays. +\param[in] params List containing the parameters of the projection, in PROJ.4 + format. +\param[out] errorText If an error occurs, explanation text about the error. +\param[out] projectionError Two posibilities: + - 0: All projected points are OK. + - Otherwise: Some points have been projected with errors. This value + only have sense if the returning error code of the function is not + 0. +\return Error code. Two posibilities: + - 0: No error. + - Otherwise: Error code of PROJ.4, see documentation. +\note If projection errors occur, the positions of the erroneous points in + \em lon and \em lat arrays store the value HUGE_VAL (constant from + math.h). +\date 12-12-2009: Function creation. +*/ +int proj_fwd(double* lon, + double* lat, + const size_t nElem, + const char params[], + char errorText[], + int* projectionError); +/******************************************************************************/ +/******************************************************************************/ +/** +\brief Wrapper around pj_inv. +\param[in,out] x Array containing the X projected coordinates. On output, this + argument contains the geodetic longitude, in radians. +\param[in,out] y Array containing the Y projected coordinates. On output, this + argument contains the geodetic latitude, in radians. +\param[in] nElem Number of elements in \em x and \em y arrays. +\param[in] params List containing the parameters of the projection, in PROJ.4 + format. +\param[out] errorText If an error occurs, explanation text about the error. +\param[out] projectionError Two posibilities: + - 0: All projected points are OK. + - Otherwise: Some points have been projected with errors. This value + only have sense if the returning error code of the function is not + 0 nor #PROJWRAP_ERR_NOT_INV_PROJ. +\return Error code. Three posibilities: + - 0: No error. + - #PROJWRAP_ERR_NOT_INV_PROJ: Do not exist inverse step for the defined + projection. + - Otherwise: Error code of PROJ.4, see documentation. +\note If projection errors occur, the positions of the erroneous points in + \em x and \em y arrays store the value HUGE_VAL (constant from math.h). +\date 12-12-2009: Function creation. +*/ +int proj_inv(double* x, + double* y, + const size_t nElem, + const char params[], + char errorText[], + int* projectionError); +/******************************************************************************/ +/******************************************************************************/ +/** +\brief Wrapper around pj_transform. +\param[in,out] x Array containing the first coordinate. On output, this argument + contains the transformed coordinates. This array can store two + types of values: + - If the system (start or end) is geodetic, this array contains + geodetic longitude, in radians. + - Otherwise (geocentric or cartographic coordinates) this array + contains \em X euclidean coordinates. +\param[in,out] y Array containing the second coordinate. On output, this argument + contains the transformed coordinates. This array can store two + types of values: + - If the system (start or end) is geodetic, this array contains + geodetic latitude, in radians. + - Otherwise (geocentric or cartographic coordinates) this array + contains \em Y euclidean coordinates. +\param[in,out] z Array containing ellipsoidal heights. +\param[in] nElem Number of elements in \em x and \em y arrays. +\param[in] nElemZ Number of elements in \em z array. If this argument is 0, the + function assumes that \em z array is NULL. +\param[in] paramsStart List containing the parameters of the start system, in + PROJ.4 format. +\param[in] paramsEnd List containing the parameters of the end system, in PROJ.4 + format. +\param[out] errorText If an error occurs, explanation text about the error. This + argument must be assigned enough memory. +\return Error code. Two posibilities: + - 0: No error. + - Otherwise: Error code of pj_init_plus or pj_transform functions. See + PROJ.4 documentation. +\date 05-12-2009: Function creation. +*/ +int proj_transform(double* x, + double* y, + double* z, + const size_t nElem, + const size_t nElemZ, + const char paramsStart[], + const char paramsEnd[], + char errorText[]); +/******************************************************************************/ +/******************************************************************************/ +#ifdef __cplusplus +} +#endif +/******************************************************************************/ +/******************************************************************************/ +#endif +/******************************************************************************/ +/******************************************************************************/ +/** @} */