Mercurial > octave-libtiff
view doc/interpreter/plotimages.m @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 75ba68c686ab |
children |
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######################################################################## ## ## Copyright (C) 2007-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave 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. ## ## Octave 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 ## <https://www.gnu.org/licenses/>. ## ######################################################################## function plotimages (d, nm, typ) if (strcmp (typ , "txt")) image_as_txt (d, nm); return; endif set_graphics_toolkit (); set_print_size (); hide_output (); outfile = fullfile (d, [nm "." typ]); if (strcmp (typ, "png")) set (groot, "defaulttextfontname", "*"); endif if (strcmp (typ, "eps")) d_typ = "-depsc2"; else d_typ = ["-d", typ]; endif if (strcmp (nm, "plot")) x = -10:0.1:10; plot (x, sin (x)); xlabel ("x"); ylabel ("sin (x)"); title ("Simple 2-D Plot"); print (outfile, d_typ); elseif (strcmp (nm, "hist")) randn ("state", 1); hist (randn (10000, 1), 30); xlabel ("Value"); ylabel ("Count"); title ("Histogram of 10,000 normally distributed random numbers"); print (outfile, d_typ); elseif (strcmp (nm, "errorbar")) rand ("state", 2); x = 0:0.1:10; y = sin (x); lerr = 0.1 .* rand (size (x)); uerr = 0.1 .* rand (size (x)); errorbar (x, y, lerr, uerr); axis ([0, 10, -1.1, 1.1]); xlabel ("x"); ylabel ("sin (x)"); title ("Errorbar plot of sin (x)"); print (outfile, d_typ); elseif (strcmp (nm, "polar")) polar (0:0.1:10*pi, 0:0.1:10*pi); title ("Example polar plot from 0 to 10*pi"); print (outfile, d_typ); elseif (strcmp (nm, "mesh")) tx = ty = linspace (-8, 8, 41)'; [xx, yy] = meshgrid (tx, ty); r = sqrt (xx .^ 2 + yy .^ 2) + eps; tz = sin (r) ./ r; mesh (tx, ty, tz); xlabel ("tx"); ylabel ("ty"); zlabel ("tz"); title ("3-D Sombrero plot"); print (outfile, d_typ); elseif (strcmp (nm, "plot3")) t = 0:0.1:10*pi; r = linspace (0, 1, numel (t)); z = linspace (0, 1, numel (t)); plot3 (r.*sin (t), r.*cos (t), z); xlabel ("r.*sin (t)"); ylabel ("r.*cos (t)"); zlabel ("z"); title ("plot3 display of 3-D helix"); print (outfile, d_typ); elseif (strcmp (nm, "extended")) x = 0:0.01:3; plot (x, erf (x)); hold on; plot (x, x, "r"); axis ([0, 3, 0, 1]); xlabel ("x"); ylabel ("erf (x)"); title ("erf (x) with text annotation"); if (strcmp (typ, "pdf") && ! strcmp (graphics_toolkit, "gnuplot")) text (0.65, 0.6175, ['$\displaystyle\leftarrow x = {2\over\sqrt{\pi}}'... '\int_{0}^{x}e^{-t^2} dt = 0.6175$'], "interpreter", "latex"); ## Be very careful about modifying this. pdflatex expects to be in ## the same directory as the file it is operating on. cd (make_absolute_filename (d)); print ([nm ".pdf"], "-dpdflatexstandalone"); [status, output] = system (["pdflatex " nm]); if (status) error ("plotimages: Failed to run pdflatex on <extended.pdf>"); endif delete ([nm ".aux"], [nm "-inc.pdf"], [nm ".log"], [nm ".tex"]); else text (0.65, 0.6175, ['\leftarrow x = {2/\surd\pi {\fontsize{16}' ... '\int_{\fontsize{8}0}^{\fontsize{8}x}} e^{-t^2} dt} = 0.6175']); print (outfile, d_typ); endif elseif (strcmp (nm, "precisiondate")) rand ("state", 1); t = datenum (2020, 1, 1):(1/1440):datenum (2020, 1, 2); x = -cos (2*pi*t) + rand (size (t)) / 10; subplot (1, 2, 1); plot (t, x); datetick ("x"); xlabel ("serial date"); title ("problem"); subplot (1, 2, 2); plot (t - 730485, x); datetick ("x"); xlabel ("2000 years off"); title ("workaround"); # set wider aspect ratio image_size = [8.25, 3.5]; # in inches, 5:2 format border = 0; # For postscript use 50/72 set (gcf, "papersize", image_size + 2*border); set (gcf, "paperposition", [border, border, image_size]); print (outfile, d_typ); else error ("unrecognized plot requested"); endif hide_output (); endfunction ## This function no longer sets the graphics toolkit; That is now done ## automatically by C++ code which will ordinarily choose 'qt', but might ## choose gnuplot on older systems. Only a complete lack of plotting is a ## problem. function set_graphics_toolkit () if (isempty (available_graphics_toolkits ())) error ("no graphics toolkit available for plotting"); elseif (strcmp ("qt", graphics_toolkit ()) && __have_feature__ ("QT_OFFSCREEN")) ## Use qt with QOffscreenSurface for plot elseif (! strcmp ("gnuplot", graphics_toolkit ())) if (! any (strcmp ("gnuplot", available_graphics_toolkits ()))) error ("no graphics toolkit available for offscreen plotting"); else graphics_toolkit ("gnuplot"); endif endif endfunction function set_print_size () image_size = [5.0, 3.5]; # in inches, 16:9 format border = 0; # For postscript use 50/72 set (groot, "defaultfigurepapertype", "<custom>"); set (groot, "defaultfigurepaperorientation", "landscape"); set (groot, "defaultfigurepapersize", image_size + 2*border); set (groot, "defaultfigurepaperposition", [border, border, image_size]); endfunction ## Use this function before plotting commands and after every call to print ## since print() resets output to stdout (unfortunately, gnuplot can't pop ## output as it can the terminal type). function hide_output () hf = figure (1, "visible", "off"); endfunction ## generate something for the texinfo @image command to process function image_as_txt (d, nm) fid = fopen (fullfile (d, [nm ".txt"]), "wt"); fputs (fid, "\n"); fputs (fid, "+---------------------------------+\n"); fputs (fid, "| Image unavailable in text mode. |\n"); fputs (fid, "+---------------------------------+\n"); fclose (fid); endfunction