On Friday, June 10, 2016, Brian O'Shea <bwoshea@gmail.com> wrote:
Hi folks,

I've stumbled across across a research task that could really use yt's Boolean data object feature, and according to the documentation it is not implemented in yt-3.  Have boolean data objects been replaced by something else?  I know there are various filtering methods in yt, but what I really need to do is spatial filtering (i.e., data in a sphere with some chunks of the sphere excised).

This hasn't been implemented.

In principle I'd be happy to take a crack at re-implementing it, although I might need some help.  Could somebody give me a sense of why it wasn't ported to yt-3 when the changeover was made?

The data selection API was completely rewritten.