This is the command mDAG that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
mDAG - Create a Directed Acyclic Graph (DAG) for Pegasus
mDAG survey band objstr width height cdelt
workdir workurlbase [urlbase]
mDAG -h survey band hdrfile workdir workurlbase [urlbase]
mDAG creates an XML-based Directed Acyclic Graph (DAG) that specifies "jobs"
or Montage modules to be run to produce a mosaic, "files" to be
consumed or generated during processing (input, intermediate, and output
files), and "dependencies" between jobs and files that imply an order
in which jobs should be run. In this "abstract graph", logical names are
assigned to jobs and files. The abstract graph is intended to be an input
to a job scheduler, such as Pegasus in the Chimera Virtual Data System.
Output mosaic is based on a header file rather than explicit object name (for
location), sizes and scale.
mDAG has custom code for dealing with surveys (e.g. DSS) where we know
we have to use the slower mProject module rather than mProjectPP.
mDAG also has custom code for the 2MASS survey where Montage scales the data
to a project-specified magnitude zero point by band (J,H,K).
Object name, resolved through NED/SIMBAD for sky location.
Size of the image in degrees.
Pixel scale in degrees.
Instead of objstr, width, height, and cdelt the user an provide a pre-built
There are a collection of files the processing will need ane which mDAG creates.
The user needs to create a location for this and give it to mDAG.
While working, some files in the workspace are accessed via URL. Again, this
needs to be set up by the user beforehand.
Optionally, results can be made URL-accessible if this parameter is given.
If successful, the workspace will be populated with severeal tables and with
the "dag.xml" file to be given to the workflow manager.
ERROR Error opening debug file
ERROR Error opening header template file
ERROR Error opening big header template file
ERROR Error opening image list
ERROR Error opening working file list for write
ERROR Error opening working file list for read
ERROR Error opening parent list
ERROR Error opening sorted parent list
ERROR Bad template: file
ERROR Output wcsinit() failed.
ERROR general error message
ERROR No return message from object lookup.
ERROR Invalid location specification or object name.
ERROR Can't find RA in lookup return.
ERROR Can't find Dec in lookup return.
ERROR Couldn't find host hostname
ERROR Couldn't create socket()
hostname: connect failed.
mDAG 2mass j m51 0.5 0.5 0.00277778 m51work http://montage-
[struct stat="OK", id="20150904_095958_21631"]
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