How to show image with constant value?

[Muthiah Annamalai]

zetab wrote:
> I need to show some computation result of image processing, but when the
> resulting image has constant value in all pixel, the imshow() function seems
> to not work for that. A "division by zero" warning was displayed and the
> gnuplot window show an black image.
>
> The following code will reproduce what I said:
>
> RGB=cat(3,ones(100,100),ones(100,100),ones(100,100));
> imshow(RGB);
>
> I replaced the imshow() by image(), and the result was the same.
> I use octave 2.9.19 on WinXP.
>
> Is there any method can show such an image in octave?
>   
I dont get a 'div by 0' error, but the result is still the same black image.
IMHO nothing could be wrong?
-Muthu