P2DFFT is a new parallelized version of 2DFFT, a code that allows the user to isolate and measure the spiral arm pitch angle of galaxies. The user input has been simplified and depending on the number of cores available, P2DFFT runs significantly faster than the older serial version, 2DFFT. Further enhancements include:
Ability to generate idealized logarithmic spiral test images of a specified size that have 1 to 6 arms with pitch angles of -75 degrees to 75 degrees
Ability to output Fourier amplitude versus inner radius and pitch angle versus inner radius for each Fourier component (m = 0 to m = 6)
Ability to calculate the Fourier amplitude weighted mean pitch angle across m = 1 to m = 6 versus inner radius
P2DFFT is in the process of being published and is therefore considered proprietary at the moment. We are willing to share the code in exchange for co-authorship. If you are interested in using this new code, please contact Patrick Treuthardt or Marc Seigar.
2DFFT can be found here. If you publish results using this code, please cite the following paper: