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/rsflog/index.php?/archives/298-Program-of-the-month-sffft3.html

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          geo2008InterferometricImagingCondition/circle geo2008InterferometricImagingCondition/sact1 geo2009TTIModeSeparation/tti3 pept2011MicroearthquakeMonitoring/saf1 pept2011MicroearthquakeMonitoring/saf3   GEE          lsq/antoine   GEO384W          hw5/hyper   GEO391          hw3/fourier hw3/pocs hw5/seabeam   GEOSTATS          simulate/rfield simulate/simple spatial_stats/correlogram spatial_stats/covariance spatial_stats/gr_variogram spatial_stats/variogram   JSG          atten/enerd lfd/twod lowrank/aniso lowrank/bp lowrank/bptti lowrank/fowler lowrank/impres lowrank/threed ltft/groll nmo3/mcelroy oc3/bei oc3/fault oc3/french oc3/frenchint seislet/lena seislet/sin2 vc3/fracs vc3/threedim   RSF          rsf/sfderiv rsf/sfenvelope school/complex school/single scons/rsfpy   SEP          fat/green fkamo/impresp fractal/random helft/mult helft/spike oc2/ocimp pyramid/pyramid texture/fft vc2/spec velspec/sigvc