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FC E - File Contouring - External contour levels

(8/25/97)

PURPOSE

Computes image contours by density foldover. As 'FC' except that bottom level and increment for contouring are supplied externally.

SEE ALSO

FC [File contouring]

USAGE

.OPERATION: FC E

.INPUT FILE: H_PIC001
[Enter name of image file to be contoured.]

.OUTPUT FILE: FIC001
[Enter name of output file. SAMPLE OUTPUTS : 1:(W)HITE - H_IMG019, 2:(B)LACK - H_IMG020, 3:(A)DJUSTED CONTOURS - H_IMG021]

.BOTTOM LEVEL: 0.5
[Enter level of first contour.]

.INCREMENT: 0.1
[Enter contouring increment.]

.OVERWRITE (Y/N): Y
[This option specifies the output file format as in 'FC'.]

If 'Y' is specified for overwriting, SPIDER asks:

.(W)HITE, (B)LACK, OR (A)DJUSTED CONTOURS: W
[Enter choice as in 'FC'.]

SUBROUTINES

CNTRFL

CALLER

UTIL3

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