mAddCube - Online in the Cloud

PROGRAM:

NAME

mAddCube - Co-add the reprojected cubes to form the output mosaic

SYNOPSIS

mAddCube [-p imgdir] [-n(o-areas)] [-a mean|median|count] [-e(xact-size)] [-d level] [-s
statusfile] images.tbl template.hdr out.fits

DESCRIPTION

Coadd the reprojected cubes in an input list to form an output mosaic with FITS header
keywords specified in a header file. Creates two output files, one containing the coadded
pixel values for each cube plane, and the other containing coadded pixel area values. The
pixel area values can be used as a weighting function if the output cube values are
themselves to be coadded with other projected cubes, and may also be used in validating
the fidelity of the output pixel values.

OPTIONS

-p imgdir
Specifies path to directory containing reprojected images. If the -p switch is not
included, mAddCube will look for the input images in the current working directory.

-n Co-addition ignores weighting by pixel areas and performs coaddition based only on
pixel postions. Will not output an area image for the output image.

-a type
Select type of averaging to be done on accumulated pixel values (either mean or
median). To generate a map showing counts of how many times each pixel was
overlapped by the input images, use count.

-e Enables exact size mode. The output image will match the header template exactly,
instead of shrinking the output to fit the data.

-d level
Turns on debugging to the specified level (1-3).

-s statusfile
mAddCube output and errors will be written to statusfile instead of stdout.

ARGUMENTS

images.tbl
ASCII table (generated by mImgtbl) containing metadata for all images to be
coadded. For cubes, mImgtbl needs to be run with the -C option which picks up the
third dimension parameters (and fourth if they exist).

template.hdr
FITS header template to be used in generation of output FITS cube.

out.fits
Name of output FITS image.

RESULT

If successful, mAddCube creates a FITS datacube file out.fits that is a coadd of all the
FITS cubes in the table images.tbl, according to the header template given. A
corresponding out_area.fits is also created.

MESSAGES

OK [struct stat = "OK", time=time]

ERROR Invalid argument for -a flag

ERROR Cannot open status file: statusfile

ERROR Invalid image metadata file: filename

ERROR Need columns: cntr,fname, crpix1, crpix2, cdelt1, cdelt2, naxis1, naxis2, crval1,
crval2, naxis3 in image list

ERROR Too many open files

ERROR Input wcsinit() failed.

ERROR Bad WCS in header template.

ERROR FITS library error

ERROR general error message

ERROR Allocation failed for file info (realloc)

ERROR Allocation failed for file info structs

ERROR Allocation failed for area file info structs

ERROR Allocation failed for input buffer

ERROR Allocation failed for input area buffer

ERROR Allocation failed for start/end info

ERROR Allocation failed for data line pointers

ERROR Allocation failed for data line

ERROR Allocation failed for area line pointers

ERROR Allocation failed for area line

ERROR Allocation failed for data counts

ERROR Allocation failed for output data line

ERROR Allocation failed for output area line

ERROR Allocation failed for data line (realloc)

ERROR Allocation failed for area line (realloc)

ERROR Allocation failed for median array

ERROR Allocation failed for median array (realloc)

ERROR Allocation failed for linked list structs

ERROR Allocation failed for linked list structs (additions)

EXAMPLES

The following example runs mAddCube on 4 FITS images, generating the output file
mosaic.fits. Related files are images.tbl and template.hdr.

$ mAddCube -p proj images.tbl template.hdr output/mosaic.fits
[struct stat="OK", time=1]

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