octave: scripts/general/blkdiag.m annotate

annotate scripts/general/blkdiag.m @ 22323:bac0d6f07a3e

maint: Update copyright notices for 2016.

author	John W. Eaton <jwe@octave.org>
date	Wed, 17 Aug 2016 01:05:19 -0400
parents	a4faec57f4c8
children	3a2b891d0b33 e9a0469dedd9

rev	line source
22323 bac0d6f07a3e maint: Update copyright notices for 2016. John W. Eaton <jwe@octave.org> parents: 21317 diff changeset	1 ## Copyright (C) 2000-2016 Daniel Calvelo
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	2 ##
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	3 ## This file is part of Octave.
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	4 ##
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 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: 6046 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: 6046 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: 6046 diff changeset	8 ## your option) any later version.
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	9 ##
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 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: 6046 diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 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: 6046 diff changeset	13 ## General Public License for more details.
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	14 ##
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	15 ## You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 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: 6046 diff changeset	17 ## <http://www.gnu.org/licenses/>.
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	18
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	19 ## -- texinfo --
20852 516bb87ea72e 2015 Code Sprint: remove class of function from docstring for all m-files. Rik <rik@octave.org> parents: 20158 diff changeset	20 ## @deftypefn {} {} blkdiag (@var{A}, @var{B}, @var{C}, @dots{})
12639 4d777e05d47c doc: Review and update documentation for "Matrix Manipulation" chapter. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	21 ## Build a block diagonal matrix from @var{A}, @var{B}, @var{C}, @dots{}
20158 7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19833 diff changeset	22 ##
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19833 diff changeset	23 ## All arguments must be numeric and either two-dimensional matrices or
7503499a252b doc: Update docstrings to have one sentence summary as first line. Rik <rik@octave.org> parents: 19833 diff changeset	24 ## scalars. If any argument is of type sparse, the output will also be sparse.
13118 c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	25 ## @seealso{diag, horzcat, vertcat, sparse}
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	26 ## @end deftypefn
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	27
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	28 ## Author: Daniel Calvelo
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	29 ## Modified by: William Poetra Yoga Hadisoeseno
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	30
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	31 function retval = blkdiag (varargin)
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	32
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	33 if (nargin < 1)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5989 diff changeset	34 print_usage ();
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	35 endif
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	36
12931 cefd568ea073 Replace function handles with function names in cellfun calls for 15% speedup. Rik <octave@nomad.inbox5.com> parents: 12639 diff changeset	37 if (! all (cellfun ("isnumeric", varargin)))
5552 bcc328604953 [project @ 2005-11-30 05:48:59 by jwe] jwe parents: 5551 diff changeset	38 error ("blkdiag: all arguments must be numeric");
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	39 endif
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	40
5552 bcc328604953 [project @ 2005-11-30 05:48:59 by jwe] jwe parents: 5551 diff changeset	41 ## Note: trailing singletons are automatically (correctly) ignored.
5569 f7b4dfd541d1 [project @ 2005-12-08 16:57:31 by jwe] jwe parents: 5552 diff changeset	42 if (! all (cellfun ("ndims", varargin) == 2))
5657 fb1de6e6343b [project @ 2006-03-09 19:21:39 by jwe] jwe parents: 5642 diff changeset	43 error ("blkdiag: all arguments must be two-dimensional matrices");
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	44 endif
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	45
5552 bcc328604953 [project @ 2005-11-30 05:48:59 by jwe] jwe parents: 5551 diff changeset	46 ## size is an option for cellfun, but it's a bit different from
bcc328604953 [project @ 2005-11-30 05:48:59 by jwe] jwe parents: 5551 diff changeset	47 ## calling size directly.
11191 01ddaedd6ad5 Reverse changeset b1f4bdc276b6. Use all lower case for "uniformoutput" option. Rik <octave@nomad.inbox5.com> parents: 8920 diff changeset	48 tmp = cell2mat (cellfun (@size, varargin', "uniformoutput", false));
5989 e049385342f6 [project @ 2006-09-14 02:10:46 by jwe] jwe parents: 5720 diff changeset	49 csz = cumsum ([0 0; tmp], 1);
13118 c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	50
c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	51 if (any (cellfun ("issparse", varargin)))
c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	52 retval = sparse (csz(end,1), csz(end,2));
c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	53 else
c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	54 retval = zeros (csz(end,:));
c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	55 endif
5592 61d6cebd243b [project @ 2006-01-12 17:55:22 by dbateman] dbateman parents: 5574 diff changeset	56
61d6cebd243b [project @ 2006-01-12 17:55:22 by dbateman] dbateman parents: 5574 diff changeset	57 for p = 1:nargin
8120 8f0150a0d19e fix blkdiag to not rely on Matlab-incompatible behaviour Jaroslav Hajek <highegg@gmail.com> parents: 7017 diff changeset	58 vp = varargin{p};
8f0150a0d19e fix blkdiag to not rely on Matlab-incompatible behaviour Jaroslav Hajek <highegg@gmail.com> parents: 7017 diff changeset	59 if (! isempty (vp))
8f0150a0d19e fix blkdiag to not rely on Matlab-incompatible behaviour Jaroslav Hajek <highegg@gmail.com> parents: 7017 diff changeset	60 retval((csz(p,1)+1):csz(p+1,1),(csz(p,2)+1):csz(p+1,2)) = vp;
8f0150a0d19e fix blkdiag to not rely on Matlab-incompatible behaviour Jaroslav Hajek <highegg@gmail.com> parents: 7017 diff changeset	61 endif
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	62 endfor
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	63
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	64 endfunction
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	65
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	66
13118 c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	67 ## regular tests
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	68 %!assert (blkdiag (1,ones (2),1), [1,0,0,0;0,1,1,0;0,1,1,0;0,0,0,1])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	69 %!assert (blkdiag ([1,2],[3,4],[5,6]), [1,2,0,0,0,0;0,0,3,4,0,0;0,0,0,0,5,6])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	70 %!assert (blkdiag ([1,2],[3;4],[5,6]), [1,2,0,0,0;0,0,3,0,0;0,0,4,0,0;0,0,0,5,6])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	71 %!assert (blkdiag ([1,2;3,4],[5,6,7]), [1,2,0,0,0;3,4,0,0,0;0,0,5,6,7])
13118 c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	72 ## tests involving empty matrices
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	73 %!assert (blkdiag ([],[],[]), [])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	74 %!assert (blkdiag ([],[1,2;3,4],[],5,[]), [1,2,0;3,4,0;0,0,5])
21317 a4faec57f4c8 maint: remove semicolon after %!assert tests to follow Octave conventions. Rik <rik@octave.org> parents: 20852 diff changeset	75 %!assert (blkdiag (zeros (1,0,1),[1,2,3],1,0,5,zeros (0,1,1)), [0,0,0,0,0,0,0;1,2,3,0,0,0,0;0,0,0,1,0,0,0;0,0,0,0,0,0,0;0,0,0,0,0,5,0])
13118 c6601cb63e4e Improve blkdiag for sparse matrices Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 12931 diff changeset	76 ## tests involving sparse matrices
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	77 %!assert (blkdiag (sparse ([1,2;3,4]),[5,6;7,8]), sparse ([1,2,0,0;3,4,0,0;0,0,5,6;0,0,7,8]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	78 %!assert (blkdiag (sparse ([1,2;3,4]),[5,6]), sparse ([1,2,0,0;3,4,0,0;0,0,5,6]))
19833 9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions. Rik <rik@octave.org> parents: 19697 diff changeset	79 ## sanity checks
5551 71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	80 %!test
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	81 %! A = rand (round (rand (1, 2) * 10));
71cfd8fedd5d [project @ 2005-11-30 03:26:50 by jwe] jwe parents: diff changeset	82 %! assert (blkdiag (A), A);
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	83

Mercurial > octave

annotate scripts/general/blkdiag.m @ 22323:bac0d6f07a3e