Does Matlab support RGB images of type single?

[Rik]

All,

The documentation is questionable on this.  Or it may be that base Matlab
does not support RGB single images, but the extra Image Toolbox allows it. 
It's an easy feature to implement and I'm considering adding support for it
in Octave.

Could someone run the following and see what it does?

img = rand (5,5,3);
imgs = single (img);
hi = image (img);
set (hi, 'cdata', imgs);   % Does it break here?
class (get (hi, 'cdata'))  % Does it return single?

Thanks,
Rik