[Yt-svn] yt-commit r1611 - trunk/yt/lagos

mturk at wrangler.dreamhost.com mturk at wrangler.dreamhost.com
Fri Feb 5 14:24:50 PST 2010


Author: mturk
Date: Fri Feb  5 14:24:48 2010
New Revision: 1611
URL: http://yt.enzotools.org/changeset/1611

Log:
Adding a simple boolean field for identifying star particles; useful for
mass histograms



Modified:
   trunk/yt/lagos/EnzoFields.py

Modified: trunk/yt/lagos/EnzoFields.py
==============================================================================
--- trunk/yt/lagos/EnzoFields.py	(original)
+++ trunk/yt/lagos/EnzoFields.py	Fri Feb  5 14:24:48 2010
@@ -342,6 +342,12 @@
           function=_StarAge,
           projection_conversion="1")
 
+def _IsStarParticle(field, data):
+    is_star = (data['creation_time'] > 0).astype('float64')
+    return is_star
+add_field('IsStarParticle', function=_IsStarParticle,
+          particle_type = True)
+
 #
 # Now we do overrides for 2D fields
 #



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