MATLAB: Find row with NaN in it.

findnan

I have variable X.
 X=[2   4   6;
    4   5   NaN
    3   NaN NaN
    5   8   12
    3   8   NaN];
How to find any row with NaN in it. ismember([3 8 NaN],X,'rows') gives me 0.

Best Answer

A start:
    is(:,1) = X(:,1)==3;
    is(:,2) = X(:,2)==8;
    is(:,3) = isnan( X(:,3));
    all( is, 2 )
which returns
    ans =
         0
         0
         0
         0
         1
AFAIK: isnan is the only way to spot NaN.
I don't think there is a magic one-liner. A little function along the example above is one way. Loop over all columns, ....
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