This is the command mShrink 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
PROGRAM:
NAME
mShrink - Re-size a FITS image
SYNOPSIS
mShrink [-f] [-d level] [-s statusfile] in.fits out.fits factor
DESCRIPTION
A utility for reducing the size of a FITS file, by averaging blocks of pixels.
OPTIONS
-f Fixed-size flag - specify output size of image, instead of the size of blocks of
pixels to be averaged
-d level
Turns on debugging to the specified level (1-4).
-s statusfile
Output and errors are sent to statusfile instead of to stdout
ARGUMENTS
in.fits
Input FITS file
out.fits
Path to output FITS file.
factor Size of blocks, in pixels, to average. File size will be reduced by 1/factor
squared. If the -f (fixed-size) flag is used, factor is the desired width of the
output image.
RESULT
[Normal mode]: FITS output image, reduced in size by a factor of (1/factor)^2 .
[Fixed-size mode]: FITS output image of width factor
MESSAGES
OK [struct stat="OK"]
ERROR Cannot open status file: statusfile
ERROR Image size factor cannot be interpreted as an real number
ERROR Shrink factor factor cannot be interpreted as an real number
ERROR [struct stat="ERROR", msg=
ERROR Image file in.fits missing of inavlid FITS.
ERROR FITS library error
EXAMPLES
$ mShrink final/out.fits final/out-lowres_5.fits 5
[struct stat="OK"]
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