Input arguments for {0} must be of type ''double''. Input arguments for {0} must be full. Input arguments for {0} must be real. Use the function REAL to get the real part of the inputs. Input arguments for {0} must have at most 2 dimensions. Z must be at least a 2x2 matrix. X must be a vector. Y must be a vector. Contour level values must be a vector or a scalar. Lengths of X and Y must match number of cols and rows in Z, respectively. Length of X must match number of cols in Z. Length of Y must match number of rows in Z. X values must be finite. Y values must be finite. Contour level values must be finite. X must be strictly increasing or strictly decreasing with no repeated values. Y must be strictly increasing or strictly decreasing with no repeated values. Number of contour levels be non-negative.