rii-mango/Papaya — pull request #9 by chrisfilo (2014-01-04 12:45:10+00:00)
Title: Fix/thresholded and parametric

This PR fixes two issues:

* when a thresholded map with only positive values was used with "parametric" argument, a negative overlay was added with 0-0 range obscuring the view
* positive and negative ranges when using "parametric" were not symmetrical; this can lead to misinterpreting the data