mDAGTbls is primarily a utility for mDAG. In normal Montage processing, one can build support files as you go: retrieve a set of images from an archive, then make a list of the images retrieved; reproject the images, then make a list of the successfully reprojected images; etc.
To support a workflow manager which plans processing using an up-front Directed Acyclic Graph (DAG) you need to have pre-determined all of this, plus which image will overlap (for background matching). You don't have to be completely right (some overlaps may end up empty or some images may have no real data in the region of interest) but you need to build a complete superset. mDAGTbls does part of this. Based on a raw image list, it determines as best it can the image lists (raw images in the region of interest from larger list of images we have, projected and corrected lists from that). mOverlaps can build the difference list from the raw list.
We document this here since the same analysis may be of use for planning other than in mDAG.
Arguments:
Example:
Return Codes: