octave-nkf: scripts/set/unique.m annotate

annotate scripts/set/unique.m @ 10373:1f11fabfa349

improve performance of unique for sparse arrays

author	John W. Eaton <jwe@octave.org>
date	Sun, 28 Feb 2010 12:32:16 -0500
parents	634e182d34e4
children	be55736a0783

rev	line source
8920 eb63fbe60fab update copyright notices John W. Eaton <jwe@octave.org> parents: 8887 diff changeset	1 ## Copyright (C) 2008, 2009 Jaroslav Hajek
7017 a1dbe9d80eee [project @ 2007-10-12 21:27:11 by jwe] jwe parents: 7016 diff changeset	2 ## Copyright (C) 2000, 2001, 2005, 2006, 2007 Paul Kienzle
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	3 ##
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	4 ## This file is part of Octave.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	5 ##
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	6 ## Octave is free software; you can redistribute it and/or modify it
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	7 ## under the terms of the GNU General Public License as published by
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	8 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	9 ## your option) any later version.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	10 ##
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	11 ## Octave is distributed in the hope that it will be useful, but
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	14 ## General Public License for more details.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	15 ##
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	16 ## 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: 6609 diff changeset	17 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6609 diff changeset	18 ## <http://www.gnu.org/licenses/>.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	19
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	20 ## -- texinfo --
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	21 ## @deftypefn {Function File} {} unique (@var{x})
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	22 ## @deftypefnx {Function File} {} unique (@var{x}, "rows")
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	23 ## @deftypefnx {Function File} {} unique (@dots{}, "first")
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	24 ## @deftypefnx {Function File} {} unique (@dots{}, "last")
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	25 ## @deftypefnx {Function File} {[@var{y}, @var{i}, @var{j}] =} unique (@dots{})
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	26 ## Return the unique elements of @var{x}, sorted in ascending order.
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	27 ## If @var{x} is a row vector, return a row vector, but if @var{x}
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	28 ## is a column vector or a matrix return a column vector.
10088 5edee330d4cb better argument checking and handling in set functions Jaroslav Hajek <highegg@gmail.com> parents: 8920 diff changeset	29 ## @var{x} can be a cell array of strings.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	30 ##
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	31 ## If the optional argument @code{"rows"} is supplied, return the unique
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	32 ## rows of @var{x}, sorted in ascending order.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	33 ##
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	34 ## If requested, return index vectors @var{i} and @var{j} such that
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	35 ## @code{x(i)==y} and @code{y(j)==x}.
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	36 ##
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	37 ## Additionally, one of @code{"first"} or @code{"last"} may be given as
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	38 ## an argument. If @code{"last"} is specified, return the highest
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	39 ## possible indices in @var{i}, otherwise, if @code{"first"} is
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	40 ## specified, return the lowest. The default is @code{"last"}.
5642 2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe] jwe parents: 5532 diff changeset	41 ## @seealso{union, intersect, setdiff, setxor, ismember}
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	42 ## @end deftypefn
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	43
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	44 function [y, i, j] = unique (x, varargin)
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	45
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	46 if (nargin < 1)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5737 diff changeset	47 print_usage ();
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	48 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	49
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	50 if (nargin > 1)
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	51
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	52 ## parse options
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	53 if (iscellstr (varargin))
8413 b8de157b4948 ChangeLog entry and style fixes for last two patches Jaroslav Hajek <highegg@gmail.com> parents: 8412 diff changeset	54 varargin = unique (varargin);
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	55 optfirst = strmatch ("first", varargin) > 0;
6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	56 optlast = strmatch ("last", varargin) > 0;
10372 634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	57 optrows = strmatch ("rows", varargin) > 0;
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	58 if (optfirst && optlast)
8664 e07e93c04080 style fixes John W. Eaton <jwe@octave.org> parents: 8610 diff changeset	59 error ("unique: cannot specify both \"last\" and \"first\"");
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	60 elseif (optfirst + optlast + optrows != nargin-1)
8664 e07e93c04080 style fixes John W. Eaton <jwe@octave.org> parents: 8610 diff changeset	61 error ("unique: invalid option");
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	62 endif
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	63 else
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	64 error ("unique: options must be strings");
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	65 endif
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	66
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	67 if (optrows && iscell (x))
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	68 warning ("unique: 'rows' is ignored for cell arrays");
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	69 optrows = false;
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	70 endif
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	71
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	72 else
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	73 optfirst = 0;
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	74 optrows = 0;
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	75 endif
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	76
10373 1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	77 ## FIXME -- the operations
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	78 ##
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	79 ## match = (y(1:n-1) == y(2:n));
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	80 ## y(idx) = [];
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	81 ##
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	82 ## are very slow on sparse matrices. Until they are fixed to be as
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	83 ## fast as for full matrices, operate on the nonzero elements of the
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	84 ## sparse array as long as we are not operating on rows.
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	85
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	86 ## FIXME -- unique is called when PKG_ADD files are parsed, but
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	87 ## issparse is not yet available because it is coming from a .oct
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	88 ## file?!?
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	89
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	90 if (exist ("issparse"))
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	91 if (issparse (x) && ! optrows && nargout <= 1)
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	92 y = unique ([0; (full (nonzeros (x)))], varargin{:});
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	93 return;
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	94 endif
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	95 endif
1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	96
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	97 if (optrows)
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	98 n = size (x, 1);
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	99 dim = 1;
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	100 else
6609 30891d1d0c86 [project @ 2007-05-09 02:12:04 by jwe] jwe parents: 6046 diff changeset	101 n = numel (x);
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	102 dim = (size (x, 1) == 1) + 1;
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	103 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	104
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	105 y = x;
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	106 if (n < 1)
10372 634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	107 if (! optrows && isempty (x) && any (size (x)))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	108 if (iscell (y))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	109 y = cell (0, 1);
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	110 else
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	111 y = zeros (0, 1, class (y));
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	112 endif
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	113 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	114 i = j = [];
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	115 return;
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	116 elseif (n < 2)
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	117 i = j = 1;
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	118 return;
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	119 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	120
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	121 if (optrows)
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	122 [y, i] = sortrows (y);
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	123 match = all (y(1:n-1,:) == y(2:n,:), 2);
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	124 idx = find (match);
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	125 y(idx,:) = [];
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	126 else
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	127 if (size (y, 1) != 1)
912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	128 y = y(:);
912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	129 endif
912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	130 [y, i] = sort (y);
5205 59592dcbb5d8 [project @ 2005-03-15 16:04:56 by jwe] jwe parents: 5168 diff changeset	131 if (iscell (y))
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	132 match = strcmp (y(1:n-1), y(2:n));
5205 59592dcbb5d8 [project @ 2005-03-15 16:04:56 by jwe] jwe parents: 5168 diff changeset	133 else
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	134 match = (y(1:n-1) == y(2:n));
5205 59592dcbb5d8 [project @ 2005-03-15 16:04:56 by jwe] jwe parents: 5168 diff changeset	135 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	136 idx = find (match);
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	137 y(idx) = [];
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	138 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	139
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	140 if (nargout >= 3)
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	141 j = i;
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	142 if (dim == 1)
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	143 j(i) = cumsum ([1; !match]);
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	144 else
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	145 j(i) = cumsum ([1, !match]);
8610 85c9906abfd1 use endif and endfor instead of end John W. Eaton <jwe@octave.org> parents: 8502 diff changeset	146 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	147 endif
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	148
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	149 if (optfirst)
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	150 i(idx+1) = [];
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	151 else
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	152 i(idx) = [];
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	153 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	154
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	155 endfunction
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	156
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	157 %!assert(unique([1 1 2; 1 2 1; 1 1 2]),[1;2])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	158 %!assert(unique([1 1 2; 1 0 1; 1 1 2],'rows'),[1 0 1; 1 1 2])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	159 %!assert(unique([]),[])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	160 %!assert(unique([1]),[1])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	161 %!assert(unique([1 2]),[1 2])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	162 %!assert(unique([1;2]),[1;2])
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	163 %!assert(unique([1,NaN,Inf,NaN,Inf]),[1,Inf,NaN,NaN])
5205 59592dcbb5d8 [project @ 2005-03-15 16:04:56 by jwe] jwe parents: 5168 diff changeset	164 %!assert(unique({'Foo','Bar','Foo'}),{'Bar','Foo'})
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	165 %!assert(unique({'Foo','Bar','FooBar'}'),{'Bar','Foo','FooBar'}')
10372 634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	166 %!assert(unique(zeros(1,0)), zeros(0,1))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	167 %!assert(unique(zeros(1,0), 'rows'), zeros(1,0))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	168 %!assert(unique(cell(1,0)), cell(0,1))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	169 %!assert(unique({}), {})
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	170 %!assert(unique([1,2,2,3,2,4], 'rows'), [1,2,2,3,2,4])
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	171 %!assert(unique([1,2,2,3,2,4]), [1,2,3,4])
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	172 %!assert(unique([1,2,2,3,2,4]', 'rows'), [1,2,3,4]')
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	173 %!assert(unique(single([1,2,2,3,2,4]), 'rows'), single([1,2,2,3,2,4]))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	174 %!assert(unique(single([1,2,2,3,2,4])), single([1,2,3,4]))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	175 %!assert(unique(single([1,2,2,3,2,4]'), 'rows'), single([1,2,3,4]'))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	176 %!assert(unique(uint8([1,2,2,3,2,4]), 'rows'), uint8([1,2,2,3,2,4]))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	177 %!assert(unique(uint8([1,2,2,3,2,4])), uint8([1,2,3,4]))
634e182d34e4 unique.m: return 0x1 for empty matrices with some nonzero dims; preserve class of argument; new tests John W. Eaton <jwe@octave.org> parents: 10088 diff changeset	178 %!assert(unique(uint8([1,2,2,3,2,4]'), 'rows'), uint8([1,2,3,4]'))
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	179 %!test
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	180 %! [a,i,j] = unique([1,1,2,3,3,3,4]);
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	181 %! assert(a,[1,2,3,4])
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	182 %! assert(i,[2,3,6,7])
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	183 %! assert(j,[1,1,2,3,3,3,4])
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	184 %!
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	185 %!test
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	186 %! [a,i,j] = unique([1,1,2,3,3,3,4]','first');
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	187 %! assert(a,[1,2,3,4]')
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	188 %! assert(i,[1,3,4,7]')
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	189 %! assert(j,[1,1,2,3,3,3,4]')
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	190 %!
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	191 %!test
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	192 %! [a,i,j] = unique({'z'; 'z'; 'z'});
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	193 %! assert(a,{'z'})
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	194 %! assert(i,[3]')
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	195 %! assert(j,[1,1,1]')
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	196 %!
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	197 %!test
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	198 %! A=[1,2,3;1,2,3];
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	199 %! [a,i,j] = unique(A,'rows');
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	200 %! assert(a,[1,2,3])
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	201 %! assert(A(i,:),a)
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	202 %! assert(a(j,:),A)

Mercurial > octave-nkf

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