HR-e5ddlZddlZddlZddlZddlZddlmZddlmZddl m Z ej dZ d Ze d d ZGd d ejZdd Zdd ZdZddZdS)N) __version__)fits)fillfitsdiffaN Compare two FITS image files and report the differences in header keywords and data. fitsdiff [options] filename1 filename2 where filename1 filename2 are the two files to be compared. They may also be wild cards, in such cases, they must be enclosed by double or single quotes, or they may be directory names. If both are directory names, all files in each of the directories will be included; if only one is a directory name, then the directory name will be prefixed to the file name(s) specified by the other argument. for example:: fitsdiff "*.fits" "/machine/data1" will compare all FITS files in the current directory to the corresponding files in the directory /machine/data1. This script is part of the Astropy package. See https://docs.astropy.org/en/latest/io/fits/usage/scripts.html#fitsdiff for further documentation. a' If the two files are identical within the specified conditions, it will report "No difference is found." If the value(s) of -c and -k takes the form '@filename', list is in the text file 'filename', and each line in that text file contains one keyword. Example ------- fitsdiff -k filename,filtnam1 -n 5 -r 1.e-6 test1.fits test2 This command will compare files test1.fits and test2.fits, report maximum of 5 different pixels values per extension, only report data values larger than 1.e-6 relative to each other, and will neglect the different values of keywords FILENAME and FILTNAM1 (or their very existence). fitsdiff command-line arguments can also be set using the environment variable FITSDIFF_SETTINGS. If the FITSDIFF_SETTINGS environment variable is present, each argument present will override the corresponding argument on the command-line unless the --exact option is specified. 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