Mercurial > octave-nkf

annotate examples/polynomial/plot.m @ 8223:0c91b9a17dcf

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Commit missing files from previous change
author David Bateman <dbateman@free.fr>
date Thu, 16 Oct 2008 09:20:58 +0100
parents
children
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