From 499080fb97d18b93ccf86df76c98dace0aaf4516 Mon Sep 17 00:00:00 2001
From: Grant Sanderson <grant@3blue1brown.com>
Date: Thu, 23 Aug 2018 14:45:00 -0700
Subject: [PATCH] Bug fix to Axes

---
 mobject/coordinate_systems.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mobject/coordinate_systems.py b/mobject/coordinate_systems.py
index 12691e99..37531963 100644
--- a/mobject/coordinate_systems.py
+++ b/mobject/coordinate_systems.py
@@ -58,6 +58,7 @@ class Axes(VGroup):
         return tuple([
             axis.point_to_number(point)
             for axis in self
+            if isinstance(axis, NumberLine)
         ])
 
     def get_graph(