MATLAB: I’m trying to check for a NaN value in an array in if condition expression but the control is not entering inside if condition.

Question

For example :

A = [1 2 3 NaN 3 5]; if isnan(A) ~= 0 %… end

Answer 1

A = [1 2 3 NaN 3 5]; 
idx = isnan(A) ;  % all NaN indices at once 
for i = 1:length(A)
      if isnan(A(i))
          fprintf('%d index value is NaN\n',i)
      end
  end