Subscript indices must either be real positive integers or logicals.

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Nithya SIvasamy 2016-1-30

评论： Stephen23 2016-1-30

I got this error when i found the mean of a histogram. I have used

 [pixelCount grayLevels] = imhist(Im); 
 meanOriginal = sum(pixelCount .* grayLevels) / sum(pixelCount);

Stephen23 2016-1-30

Have you defined a varibale named sum ?

Please tell us exactly the output of

which sum -all

Walter Roberson 2016-1-30

You have probably named a variable sum, interfering with the use of the sum function.

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