Rotating Images without enlarging the image space

[Matt Denton]

Hi-ya all,

Does anyone know how to rotate an image by 90 degrees without creating 
a larger image?  I need to rotate clock or anti-clockwise by a straight 
90 degrees.  Problem is, all rotations seem to enlarge to the square of 
the largest side.  Save moving the data pixel-by-pixel using a 
Transcript matrix transform (slowish) is there another way?  I don't 
fancy lots of imagedata manipulation... I'm sure there is a simple way. 
  Currently I'm rotating, grouping and resizing group (brings corners 
in).  Not good.

Any ideas?

M@