dear list, i have a matrix with missing values like 1 2 3 4 x x 2 2 2 2 2 2 2 x 2 the x stands for the missing value. i have to substitute it to NA substitute or replace didn´t work out, as they are for vectors only however matrix[,i] also didn´t work. can anybody tell me, who i can change these values easily? thanks stefan
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