Replacing NaN's in column of a Matrix

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Claire Hollow
Claire Hollow 2020-5-29
编辑： Stephen23 2020-5-29
Hello! I feel tihs should be rather simply but for some reason I cannot get it to work.
I have a 2922x14 matrix. In random places in the second column there are 'NaN' and I'm trying to change all the 'NaN' to 250. Im trying to do a possible if-else (or anything that should work) statement to change all the NaN in just that second column to 250. Thank you ahead of time for the help!

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Stephen23
Stephen23 2020-5-29
Where M is your matrix:
X = isnan(M(:,2));
M(X,2) = 250;

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