combine_neurons: only combine .alpha if all Dotprops have alpha

navis-org · Dec 21, 2022 · 4916856 · 4916856
1 parent aa4bacf
commit 4916856
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/navis/morpho/manipulation.py b/navis/morpho/manipulation.py
@@ -933,7 +933,9 @@ def combine_neurons(*x: Union[Sequence[NeuronObject], 'core.NeuronList']
         x._points = np.vstack(nl._points)
 
         x._vect = np.vstack(nl.vect)
-        x._alpha = np.hstack(nl.alpha)
+
+        if not any([isinstance(n._alpha, type(None)) for n in nl]):
+            x._alpha = np.hstack(nl.alpha)
 
         if any(nl.has_connectors):
             x._connectors = pd.concat([n.connectors for n in nl],  # type: ignore  # no stubs for concat