Ok, for a certain program I am writing (protein folding), I need to be able perform rotations. I was first planning to do it manually by defining rotation matrices and change of basis matrices etc but I think pdl might save me time. However I am not sure how to use its use PDL::Transform to do so. Here is a piece of code that I was using to experiment with pdl 
use PDL;        
use PDL::Transform;

@a = [[1,0,0],[0,1,0],[0,0,1]];   

$c= pdl @a; 
     
$e = t_rot(45,45,45);

$c = $e * $c 

print $c;

[download]
I was hoping this would rotate my 1,1,1 vector in all directions by 45 degrees but it gives the error. "Hash given as a pdl - but not {PDL} key!". I am not able to understand what this error is for? Also I have seen no tutorial where these rotationa matrices are explained so I would appreciate any help, thanks.

In reply to Using PDL for rotations by Anonymous Monk

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