clip_imhist.sh
Updated: Oct17, 2018

This clip_ (Command Line Image Processing) script computes the histogram of pixel values in a user-specificied box in a FITS image. It should be noted that I use clip_imhist.sh in various other scripts such as imstats_view, run_skyboxes, and run_skyhistfit. Hence, it is not advisable to dink around with this routine.


% clip_imhist --help 

Usage: clip_imhist.sh a.fits 0.0 10000.0  20  695 762  534 631 
arg1 - input FITS image 1
arg2 - zmin (low end of first bin) 
arg3 - zmax (high end of last bin) 
arg4 - number of bins  
arg5 - min i of image sub-region 
arg6 - max i of image sub-region 
arg7 - min j of image sub-region 
arg8 - max j of image sub-region 

A typical call: 
% clip_imhist.sh ../20170420T101656.1_acm_sci.fits 1283.1 1734.3 360 404 510 493 594 



Sample runs using basic tools

  1. View a histogram starting with ds9_imstats.
  2. Use imstats_view to measure boxes.



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