clearpathrobotics/enu — pull request #4 by chadrockey (2013-08-17 00:18:06+00:00)
Title: Adds feature to always have '0' for the altitude.

This is useful for two reasons:

1) Some users may want GPS locked to the surface.

2) The example GPS bags I've gotten from @pmukherj have had NaN in the altitude field. Running these through enu produces all NaN outputs.