Mercurial > octave
view scripts/strings/mat2str.m @ 30564:796f54d4ddbf stable
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2021.
In all .txi and .texi files except gpl.txi and gpl.texi in the
doc/liboctave and doc/interpreter directories, change the copyright
to "Octave Project Developers", the same as used for other source
files. Update copyright notices for 2022 (not done since 2019). For
gpl.txi and gpl.texi, change the copyright notice to be "Free Software
Foundation, Inc." and leave the date at 2007 only because this file
only contains the text of the GPL, not anything created by the Octave
Project Developers.
Add Paul Thomas to contributors.in.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Tue, 28 Dec 2021 18:22:40 -0500 |
parents | 01de0045b2e3 |
children | 597f3ee61a48 |
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######################################################################## ## ## Copyright (C) 2002-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave is free software: you can redistribute it and/or modify it ## under the terms of the GNU General Public License as published by ## the Free Software Foundation, either version 3 of the License, or ## (at your option) any later version. ## ## Octave is distributed in the hope that it will be useful, but ## WITHOUT ANY WARRANTY; without even the implied warranty of ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the ## GNU General Public License for more details. ## ## You should have received a copy of the GNU General Public License ## along with Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {@var{s} =} mat2str (@var{x}, @var{n}) ## @deftypefnx {} {@var{s} =} mat2str (@var{x}, @var{n}, "class") ## Format real, complex, and logical matrices as strings. ## ## The returned string may be used to reconstruct the original matrix by using ## the @code{eval} function. ## ## The precision of the values is given by @var{n}. If @var{n} is a scalar ## then both real and imaginary parts of the matrix are printed to the same ## precision. Otherwise @code{@var{n}(1)} defines the precision of the real ## part and @code{@var{n}(2)} defines the precision of the imaginary part. ## The default for @var{n} is 15. ## ## If the argument @qcode{"class"} is given then the class of @var{x} is ## included in the string in such a way that @code{eval} will result in the ## construction of a matrix of the same class. ## ## @example ## @group ## mat2str ([ -1/3 + i/7; 1/3 - i/7 ], [4 2]) ## @result{} "[-0.3333+0.14i;0.3333-0.14i]" ## ## mat2str ([ -1/3 +i/7; 1/3 -i/7 ], [4 2]) ## @result{} "[-0.3333+0i 0+0.14i;0.3333+0i -0-0.14i]" ## ## mat2str (int16 ([1 -1]), "class") ## @result{} "int16([1 -1])" ## ## mat2str (logical (eye (2))) ## @result{} "[true false;false true]" ## ## isequal (x, eval (mat2str (x))) ## @result{} 1 ## @end group ## @end example ## ## @seealso{sprintf, num2str, int2str} ## @end deftypefn function s = mat2str (x, n = 15, cls = "") if (nargin < 1 || ! (isnumeric (x) || islogical (x))) print_usage (); elseif (ndims (x) > 2) error ("mat2str: X must be two dimensional"); endif if (nargin == 2 && ischar (n)) cls = n; n = 15; elseif (isempty (n)) n = 15; # Default precision elseif (numel (n) > 2) error ("mat2str: N must have only 1 or 2 elements"); else n = fix (n); endif x_islogical = islogical (x); x_iscomplex = iscomplex (x); if (x_iscomplex) if (isscalar (n)) n = [n, n]; endif fmt = sprintf ("%%.%dg%%+.%dgi", n(1), n(2)); elseif (x_islogical) v = {"false", "true"}; fmt = "%s"; else fmt = sprintf ("%%.%dg", n(1)); endif nel = numel (x); if (nel == 0) ## Empty, only print brackets s = "[]"; elseif (nel == 1) ## Scalar X, don't print brackets if (x_iscomplex) s = sprintf (fmt, real (x), imag (x)); elseif (x_islogical) s = v{x+1}; else s = sprintf (fmt, x); endif else ## Non-scalar X, print brackets fmt = [fmt " "]; if (x_iscomplex) t = x.'; s = sprintf (fmt, [real(t(:))'; imag(t(:))']); elseif (x_islogical) t = v(x.'+1); s = cstrcat (sprintf (fmt, t{:})); else s = sprintf (fmt, x.'); endif s = ["[" s]; s(end) = "]"; idx = strfind (s, " "); nc = columns (x); s(idx(nc:nc:end)) = ";"; endif if (strcmp ("class", cls)) s = [class(x) "(" s ")"]; endif endfunction %!assert (mat2str (0.7), "0.7") %!assert (mat2str (pi), "3.14159265358979") %!assert (mat2str (pi, 5), "3.1416") %!assert (mat2str (single (pi), 5, "class"), "single(3.1416)") %!assert (mat2str ([-1/3 + i/7; 1/3 - i/7], [4 2]), %! "[-0.3333+0.14i;0.3333-0.14i]") %!assert (mat2str ([-1/3 +i/7; 1/3 -i/7], [4 2]), %! "[-0.3333+0i 0+0.14i;0.3333+0i -0-0.14i]") %!assert (mat2str (int16 ([1 -1]), "class"), "int16([1 -1])") %!assert (mat2str (true), "true") %!assert (mat2str (false), "false") %!assert (mat2str (logical (eye (2))), "[true false;false true]") %!assert (mat2str (logical ([0 1; 0 0])), "[false true;false false]") ## Test input validation %!error <Invalid call> mat2str () %!error mat2str (["Hello"]) %!error <X must be two dimensional> mat2str (ones (3,3,2)) %!error <N must have only 1 or 2 elements> mat2str (ones (3,3), [1 2 3])