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WT TV - Lattice Indexing

(8/10/95)

PURPOSE

1. Automatic indexing of reciprocal lattice from 2 or more reflections. 2. Creation of a filter file for quasi-optical crystal-line Fourier filtration.

SEE ALSO

WT [Lattice Indexing]

USAGE

.OPERATION: WT TV

.POWER SPECTRUM FILE: POW001
[Enter the name of the power spectrum file.]

.FOURIER FILE: FOU001
[Enter the name of the Fourier file.]

.REFLECTIONS DOC. FILE: DOC001
[Enter the name of the Document file containing the reflection indicies and locations. This file can be created using the REFLECTIONS menu in WEB.]

.WINDOW SIZES (SEARCH,FILT): 7,5
[Enter the dimensions of square windows to be used in the search for maxima and filtration (2nd not presently used).]

.MAXIMUM RESOLUTION DISTANCE: 120
[Enter the radius of a circle in Fourier space within which reflections on the indexed lattice are being determined.]

[The initial and the refined lattice parameters will be listed along with x and y components of each. A list of the reflections found, and their energies, is recorded in the RESULTS file.]

.FILTER FILE: FIL001
[Enter the name of the file that will contain the coordinates of the refined lattice for use in filtration. See 'GF' and 'RD' for details.]

NOTES

  1. A detailed description of quasi-optical filtration using SPIDER is found in the document FILTER.DOC. See the manual chapter for WT for an explanation of lattice indices.

SUBROUTINES

TVWN3, LATCEN, MAXF

CALLER

DRIV2

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