/usr/share/octave/packages/symbolic-1.1.0/splot.m is in octave-symbolic 1.1.0-3.
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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 | ## Copyright (C) 2002 Ben Sapp <bsapp@nua.lampf.lanl.gov>
##
## 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.
##
## You should have received a copy of the GNU General Public License
## along with this program; If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} splot(@var{f},@var{x},@var{range})
## Plot a symbolic function f(x) over range.
## @end deftypefn
function splot(expression,symbol,range)
## we should be a little smarter about this
t = linspace(min(range),max(range),400);
x = zeros(size(t));
j = 1;
for i = t
x(j) = to_double(subs(expression,symbol,vpa(t(j))));
j++;
endfor
plot(t,x);
endfunction
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