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CF 3 - Construct Fourier - 3D

(12/27/93)

PURPOSE

To construct a three-dimensional Fourier file from amplitudes and phases of reflections.

SEE ALSO

CF [Construct Fourier]

USAGE

.OPERATION: CF 3

.OUTPUT FILE: FOU001
[Enter name of output file.]

.ENTER LARGEST H, LARGEST K: 4,4
[Enter largest H,K indices in your data. This input determines the dimensions of the file. See below.]

.ENTER LARGEST L: 4
[Enter largest L index in your data. To be sure that the file has cubic dimensions, choose HMAX=KMAX=LMAX. The "next" powers of two are calculated for the given indices. In the above example, the final dimensions would be 16,16, 16.]

.REPETITION FACTOR: 2
[Enter factor to expand the scale of the data with respect to the Fourier file. As a result of expansion, the inverse transform of the result will appear repeated with a period of 2 in all three directions. Only powers of two are allowed.]

.ENTER H,K,L INDICES, AMPLITUDE, PHASE: 2,1,3,220.,180.
[Enter indices, amplitude, and phase (in degrees) of first reflection.]

.ENTER H,K,L INDICES, AMPLITUDE, PHASE:

[This sequence continues until 0,0,0 and two extra carriage returns are entered.]

SUBROUTINES

CREATF, CREAF3

CALLER

FOUR1

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