MATLAB: Finding consecutive NaN in matrix

matrix

i have a vector like [1,2,3,4,NaN,NaN,NaN,7,8,9]. I want to find if there is 3 consecutive NaN present in the vector. i can go for loop but is there more direct and easy way to do that.

Best Answer

 >> x = [1,2,3,4,NaN,NaN,NaN,7,8,9] ;
 >> strfind( isnan(x), true(1,3) )
 ans =
     5
if you just need a "flag found", do it as follows:
 >> found = ~isempty(strfind( isnan(x), true(1,3) ))
 found =
  logical
   1
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