Unitize the columns of matrix

Given a matrix d x n (d-dimensional, n-object) I开发者_开发问答 would like to compute the unit length vector of each columns. (i.e the resultant matrix should have unit length in every column)

how can i do it without looping every column?

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I'm assuming you're using the L2 norm. In that case,

normalizedVector = bsxfun(@rdivide,vector,sqrt(sum(vector.^2,1)));

will have unit length along each column.