Mercurial > octave-libgccjit
view libinterp/corefcn/mgorth.cc @ 18961:52e01aa1fe8b
Overhaul FLTK pan, rotate, zoom
* graphics.in.h: add axes properties pan, rotate3d, mouse_wheel_zoom
and custom set_pan which disables rotate3d.
* graphics.cc: add custom set_rotate3d and link with pan property.
Disable rotate3d for 2D plots.
* __init_fltk__.cc: replace gui_mode and mouse_wheel_zoom with axes
properties pan, rotate3d and mouse_wheel_zoom. Disable pan for legends,
move them instead.
* __add_default_menu__.m: Add new menu entries for new pan and zoom modes.
* findall.m: Update test for added uimenus.
Each axes now has its own properties for interactive GUI control of pan,
rotate3d and mouse_wheel_zoom. Now it's possible to have several figures
and set pan for the 2D plot in figure x and rotate3d for the 3D plot in
figure y. There are two new pan modes: "Pan x only" and "Pan y only".
The toolbar buttons "P" and "R" set pan and rotate3d for the last clicked axes
object or the object below the center of the canvas if none was clicked yet.
The legend can now be moved with the mouse.
author | Andreas Weber <andy.weber.aw@gmail.com> |
---|---|
date | Sun, 27 Jul 2014 22:31:14 +0200 |
parents | 175b392e91fe |
children |
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/* Copyright (C) 2009-2013 Carlo de Falco Copyright (C) 2010 VZLU Prague 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 <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "oct-norm.h" #include "defun.h" #include "error.h" #include "gripes.h" template <class ColumnVector, class Matrix, class RowVector> static void do_mgorth (ColumnVector& x, const Matrix& V, RowVector& h) { octave_idx_type Vc = V.columns (); h = RowVector (Vc + 1); for (octave_idx_type j = 0; j < Vc; j++) { ColumnVector Vcj = V.column (j); h(j) = RowVector (Vcj.hermitian ()) * x; x -= h(j) * Vcj; } h(Vc) = xnorm (x); if (real (h(Vc)) > 0) x = x / h(Vc); } DEFUN (mgorth, args, nargout, "-*- texinfo -*-\n\ @deftypefn {Built-in Function} {[@var{y}, @var{h}] =} mgorth (@var{x}, @var{v})\n\ Orthogonalize a given column vector @var{x} with respect to a set of\n\ orthonormal vectors comprising the columns of @var{v}\n\ using the modified Gram-Schmidt method.\n\ On exit, @var{y} is a unit vector such that:\n\ \n\ @example\n\ @group\n\ norm (@var{y}) = 1\n\ @var{v}' * @var{y} = 0\n\ @var{x} = [@var{v}, @var{y}]*@var{h}'\n\ @end group\n\ @end example\n\ \n\ @end deftypefn") { octave_value_list retval; int nargin = args.length (); if (nargin != 2 || nargout > 2) { print_usage (); return retval; } octave_value arg_x = args(0); octave_value arg_v = args(1); if (arg_v.ndims () != 2 || arg_x.ndims () != 2 || arg_x.columns () != 1 || arg_v.rows () != arg_x.rows ()) { error ("mgorth: V should be a matrix, and X a column vector with" " the same number of rows as V."); return retval; } if (! arg_x.is_numeric_type () && ! arg_v.is_numeric_type ()) { error ("mgorth: X and V must be numeric"); } bool iscomplex = (arg_x.is_complex_type () || arg_v.is_complex_type ()); if (arg_x.is_single_type () || arg_v.is_single_type ()) { if (iscomplex) { FloatComplexColumnVector x = arg_x.float_complex_column_vector_value (); FloatComplexMatrix V = arg_v.float_complex_matrix_value (); FloatComplexRowVector h; do_mgorth (x, V, h); retval(1) = h; retval(0) = x; } else { FloatColumnVector x = arg_x.float_column_vector_value (); FloatMatrix V = arg_v.float_matrix_value (); FloatRowVector h; do_mgorth (x, V, h); retval(1) = h; retval(0) = x; } } else { if (iscomplex) { ComplexColumnVector x = arg_x.complex_column_vector_value (); ComplexMatrix V = arg_v.complex_matrix_value (); ComplexRowVector h; do_mgorth (x, V, h); retval(1) = h; retval(0) = x; } else { ColumnVector x = arg_x.column_vector_value (); Matrix V = arg_v.matrix_value (); RowVector h; do_mgorth (x, V, h); retval(1) = h; retval(0) = x; } } return retval; } /* %!test %! for ii=1:100 %! assert (abs (mgorth (randn (5, 1), eye (5, 4))), [0 0 0 0 1]', eps); %! endfor %!test %! a = hilb (5); %! a(:, 1) /= norm (a(:, 1)); %! for ii = 1:5 %! a(:, ii) = mgorth (a(:, ii), a(:, 1:ii-1)); %! endfor %! assert (a' * a, eye (5), 1e10); */