How to obtain the histogram of a colored image by "imhist" ?

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bh dhouha
bh dhouha 2015-2-18
编辑： Image Analyst 2015-2-18
I have an image 180x180 colored,i used the function "imhist" but there is always an error i dont know why .

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Image Analyst
Image Analyst 2015-2-18
编辑：Image Analyst 2015-2-18
You have to do it one color channel at a time. See attached demo.

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