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## Copyright (C) 2007 Andrew Ross
##
## 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, 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.
## usage: hold on | off
## Tell Octave to `hold' the current data on the plot when executing
## subsequent plotting commands. This allows you to execute a series of
## plot commands and have all the lines end up on the same figure. The
## default is for each new plot command to clear the plot device first.
##
function hold (arg)
global __pl
if (nargin ~= 1)
usage("hold on|off");
end
if (strcmpi(arg,"on") == 1)
__pl.hold(plgstrm+1) = 1;
elseif (strcmpi(arg,"off") == 1)
__pl.hold(plgstrm+1) = 0;
else
usage("hold on|off");
end
endfunction
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