How to Plot a matrix?

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khatereh
khatereh 2012-7-17
Hi, I have a matrix that I want to visualize it. So the figure have a legend showing the greater values is with which color and vise versa.
thanks

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Seyhan Emre Gorucu
Seyhan Emre Gorucu 2012-7-18
I didn't understand your question exactly but scatter might be solution for you. You need a x vector y vector and a matrix. Google matlab scatter. I can help better if you have a simple example and if you can elaborate better.
Richard Zapor
Richard Zapor 2012-7-18
编辑：Richard Zapor 2012-7-18
Visualizing a matrix for relative magnitudes can be done with surf or I like imagesc.
A=randi(256,[64 128]);
figure;imagesc(A)
You can threshold and change from color to grayscale.
figure;imagesc(A,[0 192]);colormap gray;axis equal;axis tight

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