public static String toString( double[][] matrix )
{
	String retVal = "";
	int m = matrix.length;
	int n = matrix[0].length;
	for ( int i = 0; i < m; ++i )
	{
		for ( int j = 0; j < n; ++j )
		{
			retVal += fillString(Double.toString(matrix[i][j]), 24);
		}
		retVal += "\n";
	}
	return(retVal);
}