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multistack - Averages groups of spectra extracted from a three-dimensional IFU NDF and then plots these averaged spectra in a stack

Description:
This shell script reads a three-dimensional IFU NDF as input and presents you with a white-light image of the cube. You can then select a number of $X$-$Y$ positions using the cursor. The script will then group these spectra creating an average spectrum for each group. It then displays the average spectra in a `stack', where each group spectrum plotted offset vertically from the previous one in the stack.
Usage:
multistack [-g number] [-i filename] [-n number] [-o number] [-z/+z]

Command-line Arguments
  • -g number
    The number of spectra in a group.

  • -i filename
    The script will use this as its input file, the specified file should be a three-dimensional NDF. By default the script will prompt for the input file.

  • -n number
    The number of groups to extract.

  • -o number
    Offset between the spectra in the stack.

  • -z
    The script will automatically prompt to select a region to zoom before prompting for the region of interest. [TRUE]
    +z
    The program will not prompt for a zoom before requesting the region of interest. [FALSE]

Implementation Status:
This script invokes a collection of A-tasks from the KAPPA package.


next up previous
Next: passband - Displays multiple passband images from a three-dimensional IFU NDF.
Up: Descriptions of Individual Applications
Previous: gridspec - Averages groups of neighbouring spectra of a three-dimensional IFU NDF and then plots these averaged spectra in a

DATACUBE --- An IFS datacube manipulation package
Starlink User Note 237
A. Allan & Malcolm J. Currie
2008 July 1
E-mail:ussc@star.rl.ac.uk

Copyright © 2008 Science and Technology Facilities Council