subtract average of the column from each of its value.

There is a matrix of 128 by 15632 order. Consider the columns of a matrix as a window. I have to subract average of window from each value of the respective window. How to do this using MATLAB?

Answer 1

[Walter Roberson]

YourVariable - repmat(mean(YourVariable), size(YourVariable,1), 1)

[Guillaume]

alternatively:

bsxfun(@minus, m, mean(m))

or:

detrend(m, 'constant')

[Explorer]

Thanks.

[Manoj Kumar]

What to do if the window size is selected such as 3*3, 5*5, or 9*9 in case of an image?

Thanks!