MATLAB: Filtering Columns of Array by Number of Row Contents

filter

I have arrays that look like this:
A =
     1   NaN   NaN
     2     3     4
     2     5   NaN
I want to remove columns that contain rows with less than n non-NaN entries. In this case, with n=2, the first column of A would be removed, since the first row contains only 1 non-NaN value. Is there a compact way to do this? I hope this explanation makes sense!

Best Answer

A = [1   NaN   NaN
     2     3     4
     2     5   NaN];
n = 2;
A(sum(~isnan(A), 2) < n, :) = [];
Result
A =
     2     3     4
     2     5   NaN
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