From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 8 Jul 2015 20:46:52 -0400 Subject: Initial commit --- noao/imred/vtel/doc/trim.hlp | 33 +++++++++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 noao/imred/vtel/doc/trim.hlp (limited to 'noao/imred/vtel/doc/trim.hlp') diff --git a/noao/imred/vtel/doc/trim.hlp b/noao/imred/vtel/doc/trim.hlp new file mode 100644 index 00000000..9962db80 --- /dev/null +++ b/noao/imred/vtel/doc/trim.hlp @@ -0,0 +1,33 @@ +.help trim Jan85 noao.imred.vtel +.ih +NAME +trim -- Trim the limb. Zero all pixels off the limb in a full disk image +.ih +USAGE +trim inputimage threshold +.ih +PARAMETERS +.ls inputimage +Name of data image to trim. +.le +.ls threshold +Squibby brightness value to use as a threshold in determining the limb. +.le +.ih +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. +.ih +EXAMPLES +1. To trim a data image called 'data' with a squibby brightness threshold +of 4 (the standard value) the command would be: + +.nf + vt> trim data 4 +.fi + +.ih +SEE ALSO +getsqib, putsqib +.endhelp -- cgit