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changeset 17242:0b8f78cdc5cd

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imwrite: give error if image is an empty or sparse matrix.
author Carnë Draug <carandraug@octave.org>
date Tue, 13 Aug 2013 06:20:02 +0100
parents 98fcf9373f5e
children 96a1c132e3c6
files scripts/image/private/__imwrite__.m
diffstat 1 files changed, 4 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/scripts/image/private/__imwrite__.m
+++ b/scripts/image/private/__imwrite__.m
@@ -26,6 +26,10 @@
 
   if (nargin < 2 || ! (isnumeric (img) || islogical (img)))
     print_usage ("imwrite");
+  elseif (isempty (img))
+    error ("imwrite: invalid empty image");
+  elseif (issparse (img) || issparse (map))
+    error ("imwrite: sparse images are not supported");
   endif
 
   [filename, ext, map, param_list] = imwrite_filename (varargin{:});