NAME

       mFitExec - Re-project and mosaic your images, with background rectification

SYNOPSIS

       mFitExec [-d] [-s statusfile] diffs.tbl fits.tbl diffdir

DESCRIPTION

       Runs  mFitplane  on  all the difference images identified by mOverlapsand generated by mDiffor mDiffExec.
       mFitExec creates a table of image-to-image difference parameters.

OPTIONS

       -d     Turns on debugging

       -s statusfile
              Writes output message to statusfile instead of to stdout

ARGUMENTS

       diffs.tbl
              Overlap table generated by mOverlaps, the last column of  which  contains  the  filenames  of  the
              difference images generated by mDiffExec.

       fits.tbl
              Output table of difference parameters.

       diffdir
              Directory containing difference images.

RESULT

       Generates  a  table,  fits.tbl,  containing  all  the  information generated by running mFitplane on each
       difference image.  nimages is the number of images for which this calculation was successfully performed,
       nfaied  is  the  number  that  generated  an  error  condition for mFitplane, nwarning is the number that
       generated a warning, and nmissing is the number of files  that  could  not  be  found  in  the  specified
       diffdir.

MESSAGES

       OK     [struct stat="OK", count=n, failed=nfailed, warning=nwarning, missing=nmissing]

       ERROR  Cannot open status file: statusfile

       ERROR  Can't open output file.

       ERROR  Invalid diffs metadata file: filename

       ERROR  Need columns: cntr1 cntr2 plus minus diff

       ERROR  svc library error

EXAMPLES

       First,  diffs.tbl is generated for a collection of reprojected images using mOverlap.  Next, mDiffExec is
       run on those images to create output images in the subdirectory diffdir.  At this point, we are ready  to
       run mFitExec:

       $ mFitExec diffs.tbl fits.tbl diff
              [struct stat="OK", count=42, failed=0, warning=0, missing=0]

       Output file: fits.tbl.

BUGS

       The drizzle algorithm has been implemented but has not been tested in this release.

       If a header template contains carriage returns (i.e., created/modified on a Windows machine), the cfitsio
       library will be unable to read it properly, resulting in the  error:  [struct  stat="ERROR",  status=207,
       msg="illegal character in keyword"]

       It  is  best  for  the  background  correction  algorithms  if  the area described in the header template
       completely encloses all of the input images in their entirety. If parts of input images are "chopped off"
       by  the  header  template,  the  background correction will be affected. We recommend you use an expanded
       header for the reprojection and background modeling steps, returning to  the  originally  desired  header
       size  for  the  final  coaddition.  The  default background matching assumes that there are no non-linear
       background variations in the individual images (and therefore in the overlap differences).  If  there  is
       any  uncertainty  in  this  regard, it is safer to turn on the "level only" background matching (the "-l"
       flag in mBgModel.

COPYRIGHT

       2001-2015 California Institute of Technology, Pasadena, California

       If your research uses Montage, please include the following acknowledgement: "This research made  use  of
       Montage.  It  is  funded  by  the  National  Science  Foundation  under Grant Number ACI-1440620, and was
       previously funded by the National Aeronautics and Space Administration's Earth Science Technology Office,
       Computation  Technologies  Project,  under  Cooperative  Agreement  Number  NCC5-626 between NASA and the
       California Institute of Technology."

       The Montage distribution includes an adaptation of the MOPEX algorithm developed at the  Spitzer  Science
       Center.