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$e = t_rot([45,45,45]);
$d = $e->apply($c);
$e = t_linear({ rot => [45,45,45], dims => 3});
$PDL::Transform::debug = 1; $e = t_linear({ rot => [45,45,45] }); # the above will emit: # PDL::Transform::Linear: assuming 2-D transform (set dims option to + change)