def _initialize_with_array(self, data, rowBased=True):
        """Set the matrix values from a two dimensional list."""
        if rowBased:
            self.matrix = []
            if len(data) != self._rows:
                raise ValueError("Size of Matrix does not match")
            for col in xrange(self._columns):
                self.matrix.append([])
                for row in xrange(self._rows):
                    if len(data[row]) != self._columns:
                        raise ValueError("Size of Matrix does not match")
                    self.matrix[col].append(data[row][col])
        else:
            if len(data) != self._columns:
                raise ValueError("Size of Matrix does not match")
            for col in data:
                if len(col) != self._rows:
                    raise ValueError("Size of Matrix does not match")
            self.matrix = copy.deepcopy(data)
Set the matrix values from a two dimensional list.