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

annotate scripts/set/unique.m @ 19734:00e31f316a3a

Fix Matlab incompatibility of "ismatrix" (bug #42422). * data.cc (isvector): new tests * data.cc (isrow): documentation improved, new tests * data.cc (iscolumn): documentation improved, new tests * data.cc (ismatrix): is matrix now only checks the dimension due to Matlab compatibility, documentation improved, new tests * accumarray.m: use more appropriate function, than ismatrix * gradient.m: use more appropriate function, than ismatrix * num2str.m: use more appropriate functions, than ismatrix * ntsc2rgb.m: use more appropriate function, than ismatrix * condest.m: use more appropriate function, than ismatrix * expm.m: use more appropriate function, than ismatrix * onenormest.m: use more appropriate function, than ismatrix * isocolors.m: use more appropriate function, than ismatrix * isonormals.m: use more appropriate function, than ismatrix * isosurface.m: use more appropriate function, than ismatrix * __errcomm__.m: use more appropriate function, than ismatrix * __interp_cube__.m: use more appropriate function, than ismatrix * __marching_cube__.m: use more appropriate function, than ismatrix * __stem__.m: use more appropriate function, than ismatrix * stairs.m: use more appropriate function, than ismatrix * validsetargs.m: use more appropriate functions, than ismatrix * unique.m: use more appropriate functions, than ismatrix * bicg.m: additional tests for numerical value * bicgstab.m: additional tests for numerical value * cgs.m: additional tests for numerical value * gmres.m: additional tests for numerical value * qmr.m: additional tests for numerical value

author	Kai T. Ohlhus <k.ohlhus@gmail.com>
date	Thu, 12 Feb 2015 18:34:56 +0100
parents	4197fc428c7d
children	9fc020886ae9

rev	line source
19731 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19037 diff changeset	1 ## Copyright (C) 2000-2015 Paul Kienzle
11523 fd0a3ac60b0e update copyright notices John W. Eaton <jwe@octave.org> parents: 11097 diff changeset	2 ## Copyright (C) 2008-2009 Jaroslav Hajek
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 --
10793 be55736a0783 Grammarcheck the documentation from m-files. Rik <octave@nomad.inbox5.com> parents: 10373 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} {[@var{y}, @var{i}, @var{j}] =} unique (@dots{})
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	24 ## @deftypefnx {Function File} {[@var{y}, @var{i}, @var{j}] =} unique (@dots{}, "first")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	25 ## @deftypefnx {Function File} {[@var{y}, @var{i}, @var{j}] =} unique (@dots{}, "last")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	26 ## Return the unique elements of @var{x} sorted in ascending order.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	27 ##
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	28 ## If the input @var{x} is a column vector then return a column vector;
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	29 ## Otherwise, return a row vector. @var{x} may also be a cell array of strings.
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	30 ##
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	31 ## If the optional argument @qcode{"rows"} is given then return the unique
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	32 ## rows of @var{x} sorted in ascending order. The input must be a 2-D matrix
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	33 ## to use this option.
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	34 ##
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	35 ## If requested, return index vectors @var{i} and @var{j} such that
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	36 ## @code{@var{y} = @var{x}(@var{i})} and @code{@var{x} = @var{y}(@var{j})}.
8887 6e4a811e58f8 deprecate create_set John W. Eaton <jwe@octave.org> parents: 8664 diff changeset	37 ##
17281 bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 16221 diff changeset	38 ## Additionally, if @var{i} is a requested output then one of @qcode{"first"} or
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 16221 diff changeset	39 ## @qcode{"last"} may be given as an input. If @qcode{"last"} is specified,
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 16221 diff changeset	40 ## return the highest possible indices in @var{i}, otherwise, if @qcode{"first"}
bc924baa2c4e doc: Add new @qcode macro for code samples which are quoted. Rik <rik@octave.org> parents: 16221 diff changeset	41 ## is specified, return the lowest. The default is @qcode{"last"}.
5642 2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe] jwe parents: 5532 diff changeset	42 ## @seealso{union, intersect, setdiff, setxor, ismember}
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	43 ## @end deftypefn
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	44
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	45 function [y, i, j] = unique (x, varargin)
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	46
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	47 if (nargin < 1)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5737 diff changeset	48 print_usage ();
19734 00e31f316a3a Fix Matlab incompatibility of "ismatrix" (bug #42422). Kai T. Ohlhus <k.ohlhus@gmail.com> parents: 19731 diff changeset	49 elseif (! (isnumeric (x) \|\| islogical (x) \|\| ischar (x) \|\| iscellstr (x)))
00e31f316a3a Fix Matlab incompatibility of "ismatrix" (bug #42422). Kai T. Ohlhus <k.ohlhus@gmail.com> parents: 19731 diff changeset	50 error ("unique: X must be an array or cell array of strings");
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	51 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	52
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	53 if (nargin > 1)
970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	54 ## parse options
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	55 if (! iscellstr (varargin))
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	56 error ("unique: options must be strings");
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	57 endif
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	58
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	59 optrows = any (strcmp ("rows", varargin));
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	60 optfirst = any (strcmp ("first", varargin));
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	61 optlast = any (strcmp ("last", varargin));
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	62 if (optfirst && optlast)
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	63 error ('unique: cannot specify both "first" and "last"');
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	64 elseif (optfirst + optlast + optrows != nargin-1)
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	65 error ("unique: invalid option");
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	66 endif
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	67
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	68 if (optrows && iscellstr (x))
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	69 warning ('unique: "rows" is ignored for cell arrays');
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	70 optrows = false;
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	71 endif
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	72 else
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	73 optrows = false;
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	74 optfirst = false;
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
18891 7bbe3658c5ef maint: Use "FIXME:" coding convention in m-files. Rik <rik@octave.org> parents: 17744 diff changeset	77 ## FIXME: The operations
10373 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
11097 ffb2f1ef2097 make issparse, sparse, and spalloc built-in functions John W. Eaton <jwe@octave.org> parents: 10885 diff changeset	86 if (issparse (x) && ! optrows && nargout <= 1)
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11563 diff changeset	87 if (nnz (x) < numel (x))
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	88 y = unique ([0; nonzeros(x)], varargin{:});
11097 ffb2f1ef2097 make issparse, sparse, and spalloc built-in functions John W. Eaton <jwe@octave.org> parents: 10885 diff changeset	89 else
ffb2f1ef2097 make issparse, sparse, and spalloc built-in functions John W. Eaton <jwe@octave.org> parents: 10885 diff changeset	90 ## Corner case where sparse matrix is actually full
ffb2f1ef2097 make issparse, sparse, and spalloc built-in functions John W. Eaton <jwe@octave.org> parents: 10885 diff changeset	91 y = unique (full (x), varargin{:});
10373 1f11fabfa349 improve performance of unique for sparse arrays John W. Eaton <jwe@octave.org> parents: 10372 diff changeset	92 endif
11097 ffb2f1ef2097 make issparse, sparse, and spalloc built-in functions John W. Eaton <jwe@octave.org> parents: 10885 diff changeset	93 return;
10373 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
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	96 if (optrows)
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	97 n = rows (x);
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	98 dim = 1;
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	99 else
6609 30891d1d0c86 [project @ 2007-05-09 02:12:04 by jwe] jwe parents: 6046 diff changeset	100 n = numel (x);
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	101 dim = (rows (x) == 1) + 1;
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	102 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	103
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	104 y = x;
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	105 ## Special cases 0 and 1
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	106 if (n == 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	107 if (! optrows && isempty (x) && any (size (x)))
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	108 if (iscellstr (y))
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	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;
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	116 elseif (n == 1)
5165 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)
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	122 if (nargout > 1)
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	123 [y, i] = sortrows (y);
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	124 else
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	125 y = sortrows (y);
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	126 endif
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	127 match = all (y(1:n-1,:) == y(2:n,:), 2);
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	128 y(match,:) = [];
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	129 else
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	130 if (! isvector (y))
5168 912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	131 y = y(:);
912058eb8360 [project @ 2005-02-28 03:23:36 by jwe] jwe parents: 5165 diff changeset	132 endif
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	133 if (nargout > 1)
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	134 [y, i] = sort (y);
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	135 else
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	136 y = sort (y);
055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	137 endif
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	138 if (iscellstr (y))
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	139 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	140 else
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	141 match = (y(1:n-1) == y(2:n));
5205 59592dcbb5d8 [project @ 2005-03-15 16:04:56 by jwe] jwe parents: 5168 diff changeset	142 endif
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	143 y(match) = [];
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	144 endif
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	145
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	146 if (isargout (3))
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	147 j = i;
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	148 if (dim == 1)
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	149 j(i) = cumsum ([1; !match]);
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	150 else
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	151 j(i) = cumsum ([1, !match]);
8610 85c9906abfd1 use endif and endfor instead of end John W. Eaton <jwe@octave.org> parents: 8502 diff changeset	152 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	153 endif
8412 970b4dbff9e4 optimize unique called with a single argument Daniel J Sebald <daniel.sebald@ieee.org> parents: 7920 diff changeset	154
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	155 if (isargout (2))
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	156 idx = find (match);
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	157 if (optfirst)
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	158 idx += 1; # in-place is faster than other forms of increment
10882 055b95863699 unique.m: Improve performance by only calculating necessary outputs. Rik <octave@nomad.inbox5.com> parents: 10793 diff changeset	159 endif
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	160 i(idx) = [];
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	161 endif
5165 b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	162
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	163 endfunction
b822b4895af2 [project @ 2005-02-27 20:51:35 by dbateman] dbateman parents: diff changeset	164
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	165
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	166 %!assert (unique ([1 1 2; 1 2 1; 1 1 2]), [1;2])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	167 %!assert (unique ([1 1 2; 1 0 1; 1 1 2],"rows"), [1 0 1; 1 1 2])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	168 %!assert (unique ([]), [])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	169 %!assert (unique ([1]), [1])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	170 %!assert (unique ([1 2]), [1 2])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	171 %!assert (unique ([1;2]), [1;2])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	172 %!assert (unique ([1,NaN,Inf,NaN,Inf]), [1,Inf,NaN,NaN])
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	173 %!assert (unique ({"Foo","Bar","Foo"}), {"Bar","Foo"})
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	174 %!assert (unique ({"Foo","Bar","FooBar"}'), {"Bar","Foo","FooBar"}')
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	175 %!assert (unique (zeros (1,0)), zeros (0,1))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	176 %!assert (unique (zeros (1,0), "rows"), zeros (1,0))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	177 %!assert (unique (cell (1,0)), cell (0,1))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	178 %!assert (unique ({}), {})
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	179 %!assert (unique ([1,2,2,3,2,4], "rows"), [1,2,2,3,2,4])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	180 %!assert (unique ([1,2,2,3,2,4]), [1,2,3,4])
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	181 %!assert (unique ([1,2,2,3,2,4]', "rows"), [1,2,3,4]')
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	182 %!assert (unique (sparse ([2,0;2,0])), [0,2]')
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	183 %!assert (unique (sparse ([1,2;2,3])), [1,2,3]')
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	184 %!assert (unique ([1,2,2,3,2,4]', "rows"), [1,2,3,4]')
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	185 %!assert (unique (single ([1,2,2,3,2,4]), "rows"), single ([1,2,2,3,2,4]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	186 %!assert (unique (single ([1,2,2,3,2,4])), single ([1,2,3,4]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	187 %!assert (unique (single ([1,2,2,3,2,4]'), "rows"), single ([1,2,3,4]'))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	188 %!assert (unique (uint8 ([1,2,2,3,2,4]), "rows"), uint8 ([1,2,2,3,2,4]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	189 %!assert (unique (uint8 ([1,2,2,3,2,4])), uint8 ([1,2,3,4]))
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	190 %!assert (unique (uint8 ([1,2,2,3,2,4]'), "rows"), uint8 ([1,2,3,4]'))
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	191
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	192 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	193 %! [a,i,j] = unique ([1,1,2,3,3,3,4]);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	194 %! assert (a, [1,2,3,4]);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	195 %! assert (i, [2,3,6,7]);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	196 %! assert (j, [1,1,2,3,3,3,4]);
7920 e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	197 %!
e56bb65186f6 improve set functions for Matlab compatibility Jaroslav Hajek <highegg@gmail.com> parents: 7650 diff changeset	198 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	199 %! [a,i,j] = unique ([1,1,2,3,3,3,4]', "first");
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	200 %! assert (a, [1,2,3,4]');
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	201 %! assert (i, [1,3,4,7]');
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	202 %! assert (j, [1,1,2,3,3,3,4]');
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	203 %!
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	204 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	205 %! [a,i,j] = unique ({"z"; "z"; "z"});
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	206 %! assert (a, {"z"});
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	207 %! assert (i, [3]');
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	208 %! assert (j, [1;1;1]);
8502 d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	209 %!
d437e8dc18fa make unique work for row vectors Daniel J Sebald <daniel.sebald@ieee.org> parents: 8413 diff changeset	210 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	211 %! A = [1,2,3;1,2,3];
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	212 %! [a,i,j] = unique (A, "rows");
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	213 %! assert (a, [1,2,3]);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	214 %! assert (A(i,:), a);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	215 %! assert (a(j,:), A);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	216
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	217 %% Test input validation
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	218 %!error unique ()
19734 00e31f316a3a Fix Matlab incompatibility of "ismatrix" (bug #42422). Kai T. Ohlhus <k.ohlhus@gmail.com> parents: 19731 diff changeset	219 %!error <X must be an array or cell array of strings> unique ({1})
19037 d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	220 %!error <options must be strings> unique (1, 2)
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	221 %!error <cannot specify both "first" and "last"> unique (1, "first", "last")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	222 %!error <invalid option> unique (1, "middle")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	223 %!error <invalid option> unique ({"a", "b", "c"}, "UnknownOption")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	224 %!error <invalid option> unique ({"a", "b", "c"}, "UnknownOption1", "UnknownOption2")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	225 %!error <invalid option> unique ({"a", "b", "c"}, "rows", "UnknownOption2")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	226 %!error <invalid option> unique ({"a", "b", "c"}, "UnknownOption1", "last")
d00f6b09258f Overhaul functions in scripts/set directory. Rik <rik@octave.org> parents: 18891 diff changeset	227 %!warning <"rows" is ignored for cell arrays> unique ({"1"}, "rows");
17338 1c89599167a6 maint: End m-files with 1 blank line. Rik <rik@octave.org> parents: 17281 diff changeset	228

Mercurial > octave-nkf

annotate scripts/set/unique.m @ 19734:00e31f316a3a