NICTA/nationalmap — pull request #468 by kgrochow (2014-12-01 06:32:36+00:00)
Title: Region map tuning

Some more region map tuning for performance and to support a ui that interacts with multiple variables.

After trying a bunch of low level techniques and them all becoming quite messy, I think the better way to attack it is controlling the boolean logic at a higher level since it's coming from the UI anyway. So once we have the input, just make (or updated) a binary variable that is displayed with a new colormap (trans & not trans). This should be able to be done with just a few calls.