"Henry Bourne" <henrybourne.remove_-_this@mac.com> wrote in message <gkt6tr$9tv$1@fred.mathworks.com>...
> Hi guys,
>
> I have a logical array representing an image. this was created from an rgb array using im2bw with a classification threshold set.
>
> The logical result is correct, but when I show it on an axis (using image()) in my GUI it appears blue and white, not black and white as I'd like.
>
> If I run the program in debug mode, and manually enter the im2bw and image() lines it appears black and white... I'm not sure what's going on!
>
> Can anyone offer some advice? I'm using 7.6.0 R2008a. Have built the gui using the guide utility.
>
> Thanks very much.
I don't know exactly but maybe you could try playing with the colormap of the figure like the following:
colormap(gray)
Because I had the same problem and the zero values were shown with dark blue.
> I don't know exactly but maybe you could try playing with the colormap of the figure like the following:
>
> colormap(gray)
>
> Because I had the same problem and the zero values were shown with dark blue.
>
> Hope it helps.
Figured it out.
It displays in black and white if I use imshow() instead of image(). Not entirely sure of the specifics why... But it works!
Thanks!
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