function testTranspose()
{
$data = array(array(1.0, 2.0), array(3.0, 4.0));
$data_transposed = array(array(1.0, 3.0), array(2.0, 4.0));
$p = new Math_Matrix($data);
$p->transpose();
$this->assertEquals($data_transposed, $p->getData());
}