Any code/library to scale down an UIImage?

Question

Is there any code or library out there that can help me scale down an image? If you take a picture with the iPhone, it is something like 2000x1000 pixels which is not very n

Answer 1

Please see the solution I posted to this question. The question involves rotating an image 90 degrees instead of scaling it, but the premise is the same (it's just the matrix transformation that is different).