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DR - Density Reference

(7/1/85)

PURPOSE

Include density reference pixels in 3-D density distribution to assure equal scaling of all slices.

SEE ALSO

DR ERR [Error Calculation between two volumes]
DR DIFF [Error and difference calculation between two volumes]

USAGE

.OPERATION: DR

.THREED FILE: 3DR004
[Enter name of 3-D file to be modified.]

[Pixels along vertices of the volume (e.g. X=1,Z=1) are replaced by the minimum (FMIN) or the maximum (FMAX) of the total volume. Thus, a slice in any direction created by 'PS' will contain pixels along the edges with the values FMAX and FMIN relating to the original 3-D distribution.]

NOTES

  1. The action of 'DR' is irreversible; values in points replaced by FMAX, FMIN are lost.

SUBROUTINES

DENREF

CALLER

VTIL2

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