Chirp-Z only works for 1D transforms?

[mcourteaux]

Am I right about this? Results seem to be wrong if I try to use non-POT 2D transforms.

Second question: performance of chirp-z non-POT is similar to the transform of the next POT? So transforming 1025 elements using chirp-z would take roughly as long as transforming 2048 elements?

[linkotec]

There is a known problem with 2D transforms in general, I should have fix it already.. And yes, chirp-z uses next power of two transform, and it requires additional pre- and post multiplication with complex number sequence.