1######################################################################## 2## 3## Copyright (C) 2013-2021 The Octave Project Developers 4## 5## See the file COPYRIGHT.md in the top-level directory of this 6## distribution or <https://octave.org/copyright/>. 7## 8## This file is part of Octave. 9## 10## Octave is free software: you can redistribute it and/or modify it 11## under the terms of the GNU General Public License as published by 12## the Free Software Foundation, either version 3 of the License, or 13## (at your option) any later version. 14## 15## Octave is distributed in the hope that it will be useful, but 16## WITHOUT ANY WARRANTY; without even the implied warranty of 17## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18## GNU General Public License for more details. 19## 20## You should have received a copy of the GNU General Public License 21## along with Octave; see the file COPYING. If not, see 22## <https://www.gnu.org/licenses/>. 23## 24######################################################################## 25 26## -*- texinfo -*- 27## @deftypefn {} {} isaxes (@var{h}) 28## Return true if @var{h} is an axes graphics handle and false otherwise. 29## 30## If @var{h} is a matrix then return a logical array which is true where the 31## elements of @var{h} are axes graphics handles and false where they are not. 32## @seealso{isfigure, ishghandle, isgraphics} 33## @end deftypefn 34 35function retval = isaxes (h) 36 37 if (nargin != 1) 38 print_usage (); 39 endif 40 41 retval = ishghandle (h); 42 43 if (any (retval)) 44 retval(retval) = strcmp (get (h(retval), "type"), "axes"); 45 endif 46 47endfunction 48 49 50%!test 51%! hf = figure ("visible", "off"); 52%! unwind_protect 53%! hax = axes (); 54%! assert (isaxes (hax)); 55%! assert (! isaxes (-hax)); 56%! unwind_protect_cleanup 57%! close (hf); 58%! end_unwind_protect 59 60%!test 61%! hf = figure ("visible", "off"); 62%! unwind_protect 63%! hax = axes (); 64%! assert (isaxes ([hax NaN]), [true false]); 65%! unwind_protect_cleanup 66%! close (hf); 67%! end_unwind_protect 68 69%!error isaxes () 70%!error isaxes (1, 2) 71