Up: GREG2 Language Internal Help
[GREG2\]MEAN [/CLIP Nsigma]
computes crude statistics on the part of the Regular Grid array lying
inside the current polygon. Blanking values as defined in SET BLANKING
are ignored. The results are displayed (some of them according to the
current ANGLE_UNIT), and stored in the variables POLY%SUM and POLY%AREA.
If option /CLIP is present, iterative kappa sigma rejection is used to
reject outlier pixels.