Mercurial > octave-nkf

annotate scripts/sparse/nonzeros.m @ 14138:72c96de7a403 stable

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
maint: update copyright notices for 2012
author John W. Eaton <jwe@octave.org>
date Mon, 02 Jan 2012 14:25:41 -0500
parents 72e60cf50dce
children f3d52523cde1
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 12671
diff changeset
1 ## Copyright (C) 2004-2012 Paul Kienzle
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
2 ##
7016
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
3 ## This file is part of Octave.
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
4 ##
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
5 ## Octave is free software; you can redistribute it and/or modify it
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
6 ## under the terms of the GNU General Public License as published by
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
7 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
8 ## your option) any later version.
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
9 ##
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
10 ## Octave is distributed in the hope that it will be useful, but
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
13 ## General Public License for more details.
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
14 ##
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
15 ## You should have received a copy of the GNU General Public License
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
16 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe]
jwe
parents: 6498
diff changeset
17 ## <http://www.gnu.org/licenses/>.
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
18
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
19 ## -*- texinfo -*-
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
20 ## @deftypefn {Function File} {} nonzeros (@var{s})
12575
d0b799dafede Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents: 11523
diff changeset
21 ## Return a vector of the non-zero values of the sparse matrix @var{s}.
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
22 ## @end deftypefn
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
23
6498
2c85044aa63f [project @ 2007-04-05 17:59:47 by jwe]
jwe
parents: 5164
diff changeset
24 function t = nonzeros (s)
7125
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe]
jwe
parents: 7017
diff changeset
25
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe]
jwe
parents: 7017
diff changeset
26 if (nargin != 1)
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe]
jwe
parents: 7017
diff changeset
27 print_usage ();
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe]
jwe
parents: 7017
diff changeset
28 endif
f084ba47812b [project @ 2007-11-08 02:29:23 by jwe]
jwe
parents: 7017
diff changeset
29
12671
72e60cf50dce nonzeros.m: Ignore unused return arguments from find().
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
30 [~, ~, t] = find (s);
9425
e9f1329ed504 nonzeros: always return a column vector
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
31
e9f1329ed504 nonzeros: always return a column vector
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
32 t = t(:);
e9f1329ed504 nonzeros: always return a column vector
John W. Eaton <jwe@octave.org>
parents: 8920
diff changeset
33
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
34 endfunction
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
35
12671
72e60cf50dce nonzeros.m: Ignore unused return arguments from find().
Rik <octave@nomad.inbox5.com>
parents: 12575
diff changeset
36
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
37 %!assert(nonzeros([1,2;3,0]),[1;3;2])
9429
4a8d93bafe9c nonzeros.m: make new tests work
John W. Eaton <jwe@octave.org>
parents: 9426
diff changeset
38 %!assert(nonzeros([1,2,3,0]),[1;2;3])
5164
57077d0ddc8e [project @ 2005-02-25 19:55:24 by jwe]
jwe
parents:
diff changeset
39 %!assert(nonzeros(sparse([1,2;3,0])),[1;3;2])
9429
4a8d93bafe9c nonzeros.m: make new tests work
John W. Eaton <jwe@octave.org>
parents: 9426
diff changeset
40 %!assert(nonzeros(sparse([1,2,3,0])),[1;2;3])