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[gnuastro-commits] master dd4f925 06/32: astscript-radial-profile: addin

From: Mohammad Akhlaghi
Subject: [gnuastro-commits] master dd4f925 06/32: astscript-radial-profile: adding documentation to the GNUASTRO book
Date: Wed, 24 Feb 2021 22:36:15 -0500 (EST)

branch: master
commit dd4f925d28e014286d741883b20356b90af0e610
Author: Raul Infante-Sainz <>
Commit: Raul Infante-Sainz <>

    astscript-radial-profile: adding documentation to the GNUASTRO book
    Until this commit, any information about the `astscript-radial-profile'
    script was written into the gnuastro book. This is simply because it was
    being developed. Now that I have been testing it with a couple of
    examples and it is more o less mature, it is necessary to add the
    documentation and information to the book.
    With this commit, only the introduction and a couple of examples about
    the script have been added to the gnuastro manual book. The description
    of all different options is still remaining.
 doc/gnuastro.texi | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/doc/gnuastro.texi b/doc/gnuastro.texi
index aecf724..f1b1919 100644
--- a/doc/gnuastro.texi
+++ b/doc/gnuastro.texi
@@ -15414,6 +15414,48 @@ For random measurements on any area, please use the 
upper-limit columns of MakeC
+@section Generate radial profile
+@cindex Radial, profile
+@cindex Radial profile
+Sometimes it is necessary to compute a radial profile of an astronomical 
+For example, imagine you want to study how the light of a galaxy is 
distributed as a function of the radial distance from the center.
+This is exactly what a radial profile is.
+Gnuastro's @file{astscript-radial-profile} script is created to obtain such 
radial profiles.
+It uses @ref{MakeProfile} to generate elliptical apertures with the values 
equal to the distance from the center of the object and @ref{Catalog} for 
measuring the values over all the different apertures.
+With the default options, the script will generate a circular radial profile 
up to a radial distance of 10 pixels using the median value and centered at the 
center of the image.
+In order to have more flexibility, several options are available and the user 
can play with them in order to obtain the wanted radial profile.
+In this sense, it can be changed the center position, the maximum radius, the 
axis ratio and the position angle (because elliptical apertures are 
considered), the operator for obtaining the values, and many other options.
+In addition to this, the user is also able to binning the data and operate 
both columns for changing them from the original computed values.
+This installed script will read a FITS image and will use it as the basis for 
constructing the radial profile.
+For more on installed scripts please see (see @ref{Installed scripts}).
+This script can be used with the following general template:
+$ astscript-radial-profile [OPTION...] FITS-file
+@end example
+One line examples:
+## Generate the radial profile with default options
+$ astscript-radial-profile image.fits
+## Generate the radial profile centered at RA=20.53751695, DEC=0.9454292263,
+## up to a radial distance of 88 pixels, axis ratio equal to 0.32 and position
+## angle of 148 deg. Save the ouput as the `radial-profile.fits' table
+$ astscript-radial-profile --xcenter=20.53751695 --ycenter=0.9454292263    \
+                           --mode=wcs --rmax=88 --qratio=0.32 --pangle=148 \
+                           --output=radial-profile.fits
+@end example
 @node Match,  , MakeCatalog, Data analysis
 @section Match

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