Re: graphics-branch in CVS

[Bill Denney]

On Wed, 31 Jan 2007, John W. Eaton wrote:

> On 31-Jan-2007, Søren Hauberg wrote:
> | Great I can now show images. However, the images doesn't appear to be
> | correctly shown. If I type "imshow(rand(100))" I should see a gray-scale
> | image of random colors, but I see a color image.
>
> I'm not sure of the proper way to fix this bug.  I suppose imshow should 
> set some property to say that the image is greyscale instead of color, 
> but I'm not sure which properies to set.

Generally, an mxnx1 matrix in the range [0 1] is considered greyscale 
while an mxnx3 in either the range [0 1] or [0 255] is considered RGB. 
An mxnx1 in the range [0 255] is considered indexed to the current 
colormap using the nearest integer (I'm only almost sure about the nearest 
integer part).

I'm pretty sure that's how matlab handles it, and it also seems logical to 
me.

Bill

--
"Maybe I shouldn't learn about life from a guy who counts with his toes."
"And thinks with his guts."
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