MATLAB: I’m getting the following error when I try to run some function m-files: Undefined function or method ‘eig’ for input arguments of type ‘intval’.

Question

I'm getting the following error when I try to run some function m-files: Undefined function or method 'eig' for input arguments of type 'intval'. thank you

Answer 1

>> doc eig
...
Input Arguments
  A — Input matrix
  square matrix
  Input matrix, specified as a real or complex square matrix.
    Data Types: double | single
    Complex Number Support: Yes
   ...

Per the documentation, eig doesn't accept anything except floating point inputs...use

E=eig(double(YourIntegerArray));