AVGI

Reduces image resolution by averaging.

AVGI sarea darea lres eres [keyword]

sarea	source area to average
darea	destination area of the averaged data
lres	resolution reduction for lines (default=1)
eres	resolution reduction for elements (default=lres)

BAND=

band number from multibanded areas (default=lowest numbered band)

The area size cannot exceed 26000 elements.

AVGI 12 15

This entry averages area 12 by one line and element and places the new area in area 15.

AVGI 10 20 4

This entry blows down area 10 four times by averaging pixel values. The new area number is 20.