First off, Cameron, I'm glad you're on board with this.  As someone who used that functionality, it's important that you're not left high and dry.

The original Halo object had a pretty limited scope and was basically only usable inside the halo finding operations.  I would definitely like to see us move to the new Halo object in yt/analysis_modules/halo_analysis/halo_object.py since it's the one being used with the HaloCatalog.  I think we can also get rid of the HaloFinder class since we are replicating all of its functionality as well.  I think, in general, we should be migrating all halo related functionality into yt/analysis_modules/halo_analysis.

Britton

On Mon, Mar 24, 2014 at 4:30 AM, Cameron Hummels <chummels@gmail.com> wrote:

I know you're not asking me, but as a user of the old halo objects, I'm OK with this moving forward.  The only suggestion I have is a short document in the yt 3.0 docs explaining the switch and roughly how to replicate basic functionality.  I think some of that already exists, though.

Cameron

On Sun, Mar 23, 2014 at 2:46 PM, Matthew Turk <matthewturk@gmail.com> wrote:

Hi all,

With the new halo analysis machinery that Britton, Brian C and Hilary
have been working on getting integrated into mainline, do we still
need the old halo objects machinery?

It seems to me that if we are able to replicate all the functionality,
*and* call the old halo finders, we don't need the actual code for
"class Halo" and "class HaloFinder" and the like.  This is the stuff
that's mostly in halo_objects.py in yt/analysis_modules/halo_finding/
.

Britton, Brian and Hilary -- does that sound okay to you?

-Matt
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--
Cameron Hummels

Postdoctoral Researcher

Steward Observatory

University of Arizona

http://chummels.org

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