/usr/share/doc/libplplot11/examples/octave/p17.m is in octave-plplot 5.9.9-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | ## Copyright (C) 2002-2003 Joao Cardoso.
##
## This program 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 2 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.
##
## This file is part of plplot_octave.
function p17(fg)
global pl_automatic_replot
t = pl_automatic_replot;
pl_automatic_replot = 0;
if(!exist('imread'))
warning('Example p17 requires imread from octave-forge');
return;
end
title "Click and Drag button 1 to select";
xlabel "Button 2 to restart and button 3 to finish";
ylabel "";
[img, map]= imread (file_in_loadpath ("lena.img"));
colormap(map);
plimage (img);
if (!nargin)
[x1, y1, x2, y2] = plrb(1);
% Prevent case where range is zero
if (x1 == x2)
x2 = x1+1;
end
if (y1 == y2)
y2 = y1+1;
end
title "Lena";
xlabel "";
plimage (img, x1, x2, y1, y2);
endif
pl_automatic_replot = t;
endfunction
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