State must be a double scalar or the output of RAND(''state''). State must be a double scalar or the output of RAND(''twister''). Seed must be a double scalar. Size inputs must be numeric. CLASSNAME input must be a class that supports RAND, for example, ''single'' or ''double''. Input following ''like'' must be a variable of a type that supports RAND. For example, double and single variables support RAND. Complex or sparse input following ''like'' is not supported.