fix names

WrightTools/data/_data.py

@@ -1935,7 +1935,7 @@ def split(
         # axis ------------------------------------------------------------------------------------
         old_expr = self.axis_expressions
         old_units = self.units
-        out = wt_collection.Collection(name=f"{self.name}_split", parent=parent)
+        out = wt_collection.Collection(name=f"{self.natural_name}_split", parent=parent)
         if isinstance(expression, int):
             if units is None:
                 units = self._axes[expression].units
@@ -1969,11 +1969,8 @@ def split(
                 omasks.append(None)
                 cuts.append(None)
         for i in range(len(positions) - 1):
-            out.create_data(f"{self.name}_{i:0>3}")
+            out.create_data(f"{self.natural_name}_{i:0>3}")
 
-        if inherit_attrs:
-            for d in out.values():
-                {d.attrs[k]: self.attrs[k] for k in self.attrs.keys() if k not in d.attrs.keys()}
         for var in self.variables:
             for i, (imask, omask, cut) in enumerate(zip(masks, omasks, cuts)):
                 if omask is None:
@@ -2047,6 +2044,10 @@ def split(
         for ax, u in zip(self.axes, old_units):
             ax.convert(u)
 
+        if inherit_attrs:
+            for d in out.values():
+                {d.attrs[k]: self.attrs[k] for k in self.attrs.keys() if k not in d.attrs.keys()}
+
         return out
 
     def transform(self, *axes, verbose=True):

tests/data/split.py

@@ -122,7 +122,7 @@ def test_split_parent():
     a = wt.data.from_PyCMDS(p)
     parent = wt.Collection()
     split = a.split(1, [1500], parent=parent)
-    assert "split" in parent
+    assert f"{a.natural_name}_split" in parent
     assert split.filepath == parent.filepath
     assert len(split) == 2
     a.close()