Mercurial > hg > octave-nkf

annotate examples/@polynomial/plot.m @ 8471:02de6775f1fe

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
parse.y: always append statements to list, but remove null statements after seeing separator
author John W. Eaton <jwe@octave.org>
date Mon, 12 Jan 2009 19:03:33 -0500
parents dba0037e6602
children 1b48b209a8d6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8223
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
1 function h = plot(p, varargin)
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
2 n = 128;
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
3 rmax = max (abs (roots (p.poly)));
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
4 x = [0 : (n - 1)] / (n - 1) * 2.2 * rmax - 1.1 * rmax;
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
5 if (nargout > 0)
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
6 h = plot(x, p(x), varargin{:});
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
7 else
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
8 plot(x, p(x), varargin{:});
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
9 endif
0c91b9a17dcf Commit missing files from previous change
David Bateman <dbateman@free.fr>
parents:
diff changeset
10 endfunction