Convert Rotate to Vector or Vector to Rotate

Convert to Vector.

string $obj = "aaa";
	/* get Matrix */
	float $m[] =  `xform -q -ws -matrix $obj`;
 
	/* convert to vector */
	float $p[] = {0,1,0};
	return pointMatrixMult($p, $m);
 

Vector to Rotate. Check below url.
Align Y Axis to Vector