toasty check-avm

The check-avm command checks whether an image file contains AVM (Astronomy Visualization Metadata) tags in its metadata. AVM metadata often include spatial positioning data that specify how an astronomical image maps onto the sky, similar to WCS headers in FITS files.


toasty check-avm
   [--print] [-p]

The IMAGE-PATH argument gives the filesystem path of an image to check. This should typically be an RGB bitmap image such as a JPEG, PNG, or TIFF file. The tool will try to load AVM data from the file and report whether it is successful.

By default, the presence of AVM data is reported along with some information about the agreement between the AVM and the image shape. If the --print or -p option is given, the actual AVM data will be dumped out.

If the --exitcode option is given, the exit code of the command line tool will reflect whether spatial AVM data were found. Zero (success) means that spatial data were found, while nonzero (failure) indicates that no data were present, the data were corrupt, or that some other failure occurred. Without this option, the exit code will be zero if the image can be opened but contains no AVM data.


This functionality requires that the pyavm Python package has been installed.

See Also