[yt-svn] commit/yt: MatthewTurk: Make sure we have an index before finding position field names.

[commits-noreply at bitbucket.org]

1 new commit in yt:

https://bitbucket.org/yt_analysis/yt/commits/3c0c6f90d620/
Changeset:   3c0c6f90d620
Branch:      yt
User:        MatthewTurk
Date:        2016-07-12 18:52:00+00:00
Summary:     Make sure we have an index before finding position field names.
Affected #:  1 file

diff -r 34215a75cce49013f1910ac18733a926a668241e -r 3c0c6f90d620f629bb71a989eb8c5c9a0b6958b7 yt/data_objects/derived_quantities.py
--- a/yt/data_objects/derived_quantities.py
+++ b/yt/data_objects/derived_quantities.py
@@ -594,6 +594,8 @@
 
     """
     def __call__(self, field):
+        # Make sure we have an index
+        self.data_source.index
         sample_fields = get_position_fields(field, self.data_source)
         rv = super(MaxLocation, self).__call__(field, sample_fields)
         if len(rv) == 1: rv = rv[0]
@@ -641,6 +643,8 @@
 
     """
     def __call__(self, field):
+        # Make sure we have an index
+        self.data_source.index
         sample_fields = get_position_fields(field, self.data_source)
         rv = super(MinLocation, self).__call__(field, sample_fields)
         if len(rv) == 1: rv = rv[0]

Repository URL: https://bitbucket.org/yt_analysis/yt/

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