[yt-svn] commit/yt: ngoldbaum: Ensure locally defined fields with physical units can still generate labels

[commits-noreply at bitbucket.org]

1 new commit in yt:

https://bitbucket.org/yt_analysis/yt/commits/e339dc97f667/
Changeset:   e339dc97f667
Branch:      yt
User:        ngoldbaum
Date:        2016-08-28 14:51:28+00:00
Summary:     Ensure locally defined fields with physical units can still generate labels
Affected #:  1 file

diff -r c941aa457bc3c9e43f3ab0ecafa82d2924a8e204 -r e339dc97f6672cc461078a780c05f535615b9e38 yt/fields/derived_field.py
--- a/yt/fields/derived_field.py
+++ b/yt/fields/derived_field.py
@@ -144,12 +144,18 @@
         return dd
 
     def get_units(self):
-        u = Unit(self.units, registry=self.ds.unit_registry)
+        if self.ds is not None:
+            u = Unit(self.units, registry=self.ds.unit_registry)
+        else:
+            u = Unit(self.units)
         return u.latex_representation()
 
     def get_projected_units(self):
-        u = Unit(self.units, registry=self.ds.unit_registry)*Unit('cm')
-        return u.latex_representation()
+        if self.ds is not None:
+            u = Unit(self.units, registry=self.ds.unit_registry)
+        else:
+            u = Unit(self.units)
+        return (u*Unit('cm')).latex_representation()
 
     def check_available(self, data):
         """
@@ -222,7 +228,10 @@
         if projected:
             raise NotImplementedError
         else:
-            units = Unit(self.units, registry=self.ds.unit_registry)
+            if self.ds is not None:
+                units = Unit(self.units, registry=self.ds.unit_registry)
+            else:
+                units = Unit(self.units)
         # Add unit label
         if not units.is_dimensionless:
             data_label += r"\ \ (%s)" % (units.latex_representation())

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

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