Removes coefficients along the ky-direction of the
Fourier transform.
SEE ALSO
FF [Fourier filter] FF BX [Fourier filter - Bar, kx direction] FF S [Fourier filter - restore surface topography]
USAGE
.OPERATION: FF B -or- FF BY
.INPUT FILE: FOU001
[Enter name of input file containing Fourier transform.
Note that this file will be overwritten by the filtered
file.]
.WIDTH OF BAR (KY-BAR,KX-BAR): 3,4
[Enter width, in Fourier units, of the strip centered on the
ky-axis that is to be removed from the Fourier transform.]
NOTES
'FF B' was developed for the specific purpose of simulating
dark field imaging (project C. Mannella).