mDAGTbls - Online in the Cloud

PROGRAM:

NAME

mDAGTbls - Construct tables of projected and background corrected images

SYNOPSIS

mDAGTbls images.tbl region.hdr rimages.tbl pimages.tbl cimages.tbl

DESCRIPTION

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

images.tbl

The set of images we have. For instance, a set download via
mArchiveList/mArchiveGet
and often a superset of what we are interested in for a specific mosaic.

region.hdr

A FITS header template file. This is used to determine the region of interest
for this run.

rimages.tbl

The "raw" (input) image we will use in this run.

pimages.tbl

The corresponding projected image list.

cimages.tbl

The corresponding background-corrected image list.

RESULT

If successful, the three output image lists will be created. NOTE: It is assumed
that the actual raw, reprojected and background-corrected images will be kept in
separate directories, so the file names in these tables are identical.

MESSAGES

ERROR Cannot open status file: filename

ERROR Invalid image metadata file: tblfile

ERROR Not enough information to determine coverages (CDELTs or CD matrix)

ERROR Need columns: cntr ctype1 ctype2 nl ns crval1 crval2 crpix1 crpix2 cdelt1 cdelt2
crota2 fname (equinox optional)

ERROR Invalid output metadata file: tblfile

ERROR Bad WCS for image integer

ERROR Output wcsinit() failed.

ERROR general error message

EXAMPLES

mDAGTbls images.tbl region.hdr rimages.tbl pimages.tbl cimages.tbl
[struct stat="OK", count="48", total="48"]

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