Save Window
The Save Window is used to write tables out,
and it is accessed using the Save Table button ()
in the Control Window's toolbar or File menu.
Any table in the Control Window's table list can be
written at any time; what is written is the
Apparent Table corresponding to the currently
selected table, which takes into account any modifications you have
made to its data or appearance this session.
The current Row Subset and Row Order
are displayed in this window as a reminder of what you're about to
save; if you modify the values in these selectors you will be
modifying the Apparent Table in the usual way.
Any Row Subsets
which have been defined on the table in the current session
will not be saved themselves, but you can save information about
subset membership by creating new boolean columns based on subsets
using the "To Column" button () from the
Subsets Window.
You can use the Table Output Format selector box to pick the format in which the table will be written from one of the supported output formats. There is no default format, and it won't automatically save to the same format it was loaded from, but if you leave it on "(auto)" it will try to guess the format based on the filename given; for instance if you specify the name "out.fits", a FITS binary table will be written.
You can specify the location of the output table in these ways, which are described in the following sections:
There is no option to compress files on output (though you can of course compress them yourself once they have been written).
If the table is large, a progress bar indicating how near the save is to completion will appear. It is not advisable to edit the table during a save operation.
In some cases, when saving a table to a format other than the one from which it was loaded, or if some new kinds of metadata have been added, it may not be possible to express all the data and metadata from the table in the new format. For instance a WDC table can contain data which represent epoch (date), and this cannot be stored in a FITS table. In this case the table may be written with such columns missing. Some message to this effect may be output in this case.