[yt-users] profile plots combining different datasets

[Nathan Goldbaum]

I wonder what would break if we got rid of this error:

In [5]: dobj = ds.all_data() + ds2.all_data()
---------------------------------------------------------------------------
YTBooleanObjectsWrongDataset              Traceback (most recent call last)
~/Documents/yt-git-fixes/yt/mods.py in <module>()
----> 1 dobj = ds.all_data() + ds2.all_data()

~/Documents/yt-git-fixes/yt/data_objects/data_containers.py in
__add__(self, other)
   1423
   1424     def __add__(self, other):
-> 1425         return self.__or__(other)
   1426
   1427     def __sub__(self, other):

~/Documents/yt-git-fixes/yt/data_objects/data_containers.py in __or__(self,
other)
   1399             raise YTBooleanObjectError(other)
   1400         if self.ds is not other.ds:
-> 1401             raise YTBooleanObjectsWrongDataset()
   1402         # Should maybe do something with field parameters here
   1403         return YTBooleanContainer("OR", self, other, ds = self.ds)

YTBooleanObjectsWrongDataset: Boolean data objects must share a common
dataset object.
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