What's the equivalent for setting an "identity transform" in 2D space?

Question

For 3D space, I use:

self.layer.transform = CATransform3DIdentity;

what corresponds here if I just need 2d space and want to assign the identity transform? I knew there was something, but I can't find it anymore.

Answer 1

Check this question for a good explanation of CATransform3D and CGAffinetransform (the one you need).