Ft3d - incore Fourier tranform
Ft3d < in.H sign{1,2,3}=0. center{1,2,3}=0. > out.H
[0]: means omit Fourier transform +1,-1: sign of sqrt(-1) on dimension {1,2,3}
[0]: don't multiply +1: multiply by 1,-1,1,-1,... before transform (centers axis in transform space) -1: multiply by 1,-1,1,-1,... after transform (allows centered transforms to be inverted)
standard seplib params dimensions transformed must be of size 2**N scaling is 1/sqrt(n) all direction
standard seplib params
standard seplib params
[20] Amount of memory to use in megabytes
Ft3d - in core 1,2, or 3 dimensional Fourier transform
Assumes in= contains COMPLEX-VALUED data.
seis/filter