IRAF help page for package noao.imred.vtel, program trim

from NOAO trim -- Trim the limb. Zero all pixels off the limb in a full disk imageUSAGEPARAMETERSDESCRIPTIONEXAMPLESSEE ALSO

trim -- Trim the limb. Zero all pixels off the limb in a full disk image

USAGE

trim inputimage threshold

PARAMETERS

inputimage

Name of data image to trim.

threshold

Squibby brightness value to use as a threshold in determining the limb.

DESCRIPTION

Trim scans all the pixels in an image and sets those pixels to zero that contain a squibby brightness smaller than the threshold value. This is done in place, that is, the input image gets modified.

EXAMPLES

1. To trim a data image called 'data' with a squibby brighness threshold of 4 (the standard value) the command would be: 

	vt> trim data 4

SEE ALSO

getsqib, putsqib,

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