Define default group on Dataset
@@ -157,6 +157,8 @@ class Dataset(Element):
format listed will be used until a suitable format is found (or
the data fails to be understood).""")
+ group = param.String(default='Dataset', constant=True)
+
# In the 1D case the interfaces should not automatically add x-values
# to supplied data
_auto_indexable_1d = True
