
NAMEArithmetic  arithmetic operations on images and numbersSYNOPSISastarithmetic [OPTION...] ASTRdata or number [ASTRdata] OPERATOR ...DESCRIPTIONArithmetic is part of GNU Astronomy Utilities 0.17. Arithmetic will do arithmetic operations on one or multiple images and numbers. Simply put, the name of the image along with the arithmetic operators and possible numbers are given as arguments. The extensions of each input are specified with (possibly multiple) calls to the 'hdu' option.Currently Arithmetic only supports postfix or reverse polish notation. For example to get the result of '5+6', you should write '5 6 +', or to get the average of two images, you should write 'a.fits b.fits + 2 /' (or more simply use the 'average' operator with 'a.fits b.fits average'). Please see the manual for more information. Arithmetic recognizes a large collection of standard operators, including basic arithmetic (e.g., +, , x, /), mathematical (e.g., abs, pow, sqrt, log), statistical (minvalue, min, max, average), comparison (e.g., lt, le, gt), logical (e.g., and, or, not), the full set of bitwise operators, and numeric type conversion operators to all known types. Please run the command below for a complete list describing all operators (press the 'SPACE' keyboard key, or arrow keys, to go down and 'q' to return to the commandline):
For more information, please run any of the following commands. In particular the second contains a very comprehensive explanation of Arithmetic's invocation: expected input(s), output(s), and a full description of all the options.
If you couldn't find your answer in the manual, you can get direct help from experienced Gnuastro users and developers. For more information, please run:
Arithmetic options:
Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. GNU Astronomy Utilities home page: http://www.gnu.org/software/gnuastro/ REPORTING BUGSReport bugs to buggnuastro@gnu.org.COPYRIGHTCopyright © 20152022 Free Software Foundation, Inc. License GPLv3+: GNU General public license version 3 or later.This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written/developed by Mohammad Akhlaghi SEE ALSOThe full documentation for Arithmetic is maintained as a Texinfo manual. If the info and Arithmetic programs are properly installed at your site, the command
should give you access to the complete manual.
Visit the GSP FreeBSD Man Page Interface. 