Mercurial > hg > octave-nkf
annotate scripts/sparse/spfun.m @ 9051:1bf0ce0930be
Grammar check TexInfo in all .m files
Cleanup documentation sources to follow a few consistent rules.
Spellcheck was NOT done. (but will be in another changeset)
| author | Rik <rdrider0-list@yahoo.com> |
|---|---|
| date | Fri, 27 Mar 2009 22:31:03 -0700 |
| parents | eb63fbe60fab |
| children | 16f53d29049f |
| rev | line source |
|---|---|
| 8920 | 1 ## Copyright (C) 2004, 2005, 2006, 2007, 2008 David Bateman & Andy Adler |
| 5164 | 2 ## |
| 7016 | 3 ## This file is part of Octave. |
| 5164 | 4 ## |
| 7016 | 5 ## Octave is free software; you can redistribute it and/or modify it |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 5164 | 14 ## |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 5164 | 18 |
| 19 ## -*- texinfo -*- | |
| 20 ## @deftypefn {Function File} {@var{y} =} spfun (@var{f},@var{x}) | |
| 21 ## Compute @code{f(@var{x})} for the non-zero values of @var{x}. | |
| 22 ## This results in a sparse matrix with the same structure as | |
|
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
8920
diff
changeset
|
23 ## @var{x}. The function @var{f} can be passed as a string, a |
| 5164 | 24 ## function handle or an inline function. |
| 25 ## @end deftypefn | |
| 26 | |
| 6498 | 27 function t = spfun (f, s) |
| 28 | |
| 5164 | 29 if (nargin != 2) |
| 6046 | 30 print_usage (); |
| 5164 | 31 endif |
| 32 | |
|
7505
f5005d9510f4
Remove dispatched sparse functions and treat in the generic versions of the functions
David Bateman <dbateman@free.fr>
parents:
7151
diff
changeset
|
33 [i, j, v] = find (s); |
|
f5005d9510f4
Remove dispatched sparse functions and treat in the generic versions of the functions
David Bateman <dbateman@free.fr>
parents:
7151
diff
changeset
|
34 [m, n] = size (s); |
| 5164 | 35 |
| 6220 | 36 if (isa (f, "function_handle") || isa (f, "inline function")) |
| 6498 | 37 t = sparse (i, j, f(v), m, n); |
| 5164 | 38 else |
| 6498 | 39 t = sparse(i, j, feval (f, v), m, n); |
| 5164 | 40 endif |
| 41 | |
| 42 endfunction | |
| 43 | |
| 44 %!assert(spfun('exp',[1,2;3,0]),sparse([exp(1),exp(2);exp(3),0])) | |
| 45 %!assert(spfun('exp',sparse([1,2;3,0])),sparse([exp(1),exp(2);exp(3),0])) | |
| 46 %!assert(spfun(@exp,[1,2;3,0]),sparse([exp(1),exp(2);exp(3),0])) | |
| 47 %!assert(spfun(@exp,sparse([1,2;3,0])),sparse([exp(1),exp(2);exp(3),0])) | |
| 48 |