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FF B - Fourier Filter - Bar, ky direction

(1/6/94)

PURPOSE

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

  1. 'FF B' was developed for the specific purpose of simulating dark field imaging (project C. Mannella).

SUBROUTINES

FILTB

CALLER

FOUR1

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