Synopsis
		sffft3 < in.rsf > out.rsf inv=n sym=n sign=inv? 1: 0 opt=y axis=2 pad=2

Input and output are complex data. The input is padded by factor pad.

July 2012 program of the month:
http://ahay.org/blog/2012/07/02/program-of-the-month-sffft3/

Parameters
		int axis=2 Axis to transform   bool inv=n [y/n] if y, perform inverse transform   bool opt=y [y/n] if y, determine optimal size for efficiency   int pad=2 padding factor   int sign=inv? 1: 0 transform sign (0 or 1)   bool sym=n [y/n] if y, apply symmetric scaling to make the FFT operator Hermitian

Used In
		BEI          ft1/brad ft1/ft2d ft1/plane4   CWP          geo2009TTIModeSeparation/tti3 pept2011MicroearthquakeMonitoring/saf1 pept2011MicroearthquakeMonitoring/saf3   DATA          alaska/line31-81-m8r