MATLAB: How to find non integer elemets in matrix

matlab function

hello
I have a matrix and I would like to check each element if its a whole number (integer) and if its not an integer I would like to copy those elmenets into diffrent 1 row matrix
with out using loops
thank you

Best Answer

Try this:
A = randi(9, 4);                                            % Integer Array
idx = randperm(16,5);
A(idx) = A(idx)+rand(1,5)                                   % Some Non-Integer Elements
NotInteger = A(rem(A,1) ~= 0)
producing:
A =
      6.0000    3.0000    2.1174    9.0000
      2.0000    8.0000    3.5079    4.0000
      3.0000    2.0000    4.3188    2.2967
      5.0000    3.4242    3.0000    9.0000
NotInteger =
      3.4242
      2.1174
      3.5079
      4.3188
      2.2967
It works because the rem (or mod) of any number with the denominator of 1 produces the fractional part of the argument. If that is zero, the element is an integer.
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