If you have images or cubes that contain data that you want to view as spectra in some fashion, then SPLAT-VO will attempt to do this for you. There are three fundamental modes for doing this:
spectrumor the planes of a cube into a set of
spectraby adding together all values that lie perpendicular to the dispersion axis (so the spectra run along this axis, what a good spectral displaying tool should do).
The default is to collapse. When collapsing cubes you have the option of which axis to step along
selecting image planes, this is known as the
select axis. To determine which option is used to
handle your cubes or images you can either set values on the command-line, along with
your spectra, or choose options in the open file dialogue. A command line that uses axis
3 as the dispersion axis and steps along axis 2 when choosing image planes might look
or in shorthand:
If you don’t choose a dispersion axis SPLAT-VO will make a good intelligent guess about this and
step along the first axis that isn’t the dispersion axis. The other possible values for
vectorize. These are described as
extract all spectra and
open whole as 1D,
respectively, in the open file dialogue.