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showing the grayscale matrix

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evangeline
evangeline 2014-1-23
评论： Image Analyst 2014-1-23
I have a 2D matrix , and I was trying to display it as an image, but the problem is that in the output axes, for all the numbers except 0, I see white in result, and black for zero, I want to see all gray colors (in grayscale) from black to white, what can I do? this is the resault I see

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Image Analyst
Image Analyst 2014-1-23
It's probably a type double, which needs to be in the range 0-1, not 0-255 that you probably have. You can autoscale with []. Try
imshow(your2Dmatrix, []);
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evangeline
evangeline 2014-1-23
编辑：evangeline 2014-1-23
thanks, it worked. can I use this for a 3D matrix too? because I have the same problem with that
Image Analyst
Image Analyst 2014-1-23
You can use it to display a 2D slice from a 3D image.

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