> I need it for automatic rescaling of images, similar to flickr.
As indicated higher in the thread, the file_column plugin is a
no-brainer when it comes to resizing with RMagic.
You only have to make sure that the original is not smaller than the
target size (like resizing 16x16 => 100x100). It works - no crash or
error -, but it doesn’t make sense, and the resulting mozaic is ugly.
(note: look for the slider just above the pictures. It is not very
visible in Safari.)