astropy/astropy — pull request #1424 by taldcroft (2013-09-09 02:38:50+00:00)
Title: Table grouping and aggregation

This PR provides a basic and simple implementation of Table grouping and aggregation. For reference see the full-featured [Pandas implementation](http://pandas.pydata.org/pandas-docs/dev/groupby.html).

There are no docs yet since I thought I would wait for initial comments before going too far in that direction, so looking at the tests is a good idea to see what can be done now. The docstrings could use a little work as well.