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subwindow.m
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1998-11-10
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## Copyright (C) 1996, 1997 John W. Eaton
##
## 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 2, 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, write to the Free
## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
## 02111-1307, USA.
## usage: subwindow (xn, yn)
##
## NOTE: this will work only with gnuplot installed with
## multiplot patch
##
## Sets subwindow position in multiplot mode for next plot. The
## multiplot mode has to be previously initialized using multiplot()
## command, else this command just becomes an aliad to multiplot()
## Author: Vinayak Dutt <Dutt.Vinayak@mayo.EDU>
## Created: 3 July 95
## Adapted-By: jwe
function subwindow (xn, yn)
if (! gnuplot_has_multiplot)
error ("subwindow: gnuplot does not appear to support this feature");
endif
## global variables to keep track of multiplot options
global __multiplot_mode__ = 0;
global __multiplot_xsize__;
global __multiplot_ysize__;
global __multiplot_xn__;
global __multiplot_yn__;
## check calling argument count
if (nargin != 2)
usage ("subwindow (xn, yn)");
endif
## check for scalar inputs
if (! (is_scalar (xn) && is_scalar (yn)))
error ("subwindow: xn and yn have to be scalars");
endif
xn = round (xn);
yn = round (yn);
## switch to multiplot mode if not already in, and use the args as the
## args to multiplot()
if (! __multiplot_mode__)
multiplot (xn, yn);
return;
endif
## get the sub plot location
if (xn < 1 || xn > __multiplot_xn__ || yn < 1 || yn > __multiplot_yn__)
error ("subwindow: incorrect xn and yn");
endif
xo = (xn - 1.0) * __multiplot_xsize__;
yo = (__multiplot_yn__ - yn) * __multiplot_ysize__;
eval (sprintf ("gset origin %g, %g", xo, yo));
clearplot;
endfunction