NAME

Ft3d - incore Fourier tranform


SYNOPSIS

Ft3d < in.H sign{1,2,3}=0. center{1,2,3}=0. > out.H


INPUT PARAMETERS

sign{1,2,3} -integer
        [0]: means omit Fourier transform
         +1,-1: sign of sqrt(-1) on dimension {1,2,3}
center{1,2,3}-integer
        [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)
n1,n2,n3 -integer
       standard seplib params
       dimensions transformed must be of size 2**N
       scaling is 1/sqrt(n) all direction
o1,o2,o3 -real
        standard seplib params
d1,d2,d3 -real
       standard seplib params
maxsize - int
      [20] Amount of memory to use in megabytes


DESCRIPTION

Ft3d - in core 1,2, or 3 dimensional Fourier transform


COMMENTS

Assumes in= contains COMPLEX-VALUED data.


SEE ALSO

the Cfft manpage


CATEGORY

seis/filter