astropy/astropy — pull request #451 by taldcroft (2012-11-01 03:10:03+00:00)
Title: Support for masked tables with missing/invalid data

This PR adds support in the table package for masked tables that contain missing or invalid data. This provides a wrapper around the numpy.ma masked array package and provides workarounds for a few features of that package.

Notes:

- DO NOT MERGE just yet. Tests depend on pytest 2.3.3 (not yet released).
- This PR is for evaluation of API, features, compatibility with other packages, etc.
- Documentation is available in HTMLROOT/table/masking.html
- @astrofrog contributed heavily to this PR.