[ Basic Info | User Guide ]
Basic Information on window
The use of "select=window" is used to select a subset of spectral
windows (or IF bands in AIPS terminology) in a uv data-set. For
example, to select the second and third spectral windows, use
Some explanation is needed for the interaction between "select=window"
and the line keyword.
Window selection complements velocity linetypes (line=velocity or
line=felocity). In this case only data from the selected windows
is used in determining the velocity channels.
There are some limitations when using window selection with channel
linetype ("line=channel"). Firstly the selected windows must
be contiguous (i.e. you cannot give "select=window(1,4)") when combined
with "line=channel" selection. Secondly the channel specification
in the line keyword is relative to the first channel in the first
selected window. For example, if you use
you will be get 10 channels starting from the first channel in window
2. If windows 2 and 3 had 8 channels each, then you would get all
8 channels from window 2, and the first two channels from window 3.
Generated by firstname.lastname@example.org on 26 May 2011