Fix CoordinateSystem init bug

Author: 3b1b

manimlib/mobject/coordinate_systems.py

@@ -10,6 +10,7 @@
 from manimlib.mobject.number_line import NumberLine
 from manimlib.mobject.svg.tex_mobject import Tex
 from manimlib.mobject.types.vectorized_mobject import VGroup
+from manimlib.utils.config_ops import digest_config
 from manimlib.utils.config_ops import merge_dicts_recursively
 from manimlib.utils.simple_functions import binary_search
 from manimlib.utils.space_ops import angle_of_vector
@@ -27,11 +28,16 @@ class CoordinateSystem():
         "dimension": 2,
         "default_x_range": [-8.0, 8.0, 1.0],
         "default_y_range": [-4.0, 4.0, 1.0],
-        "width": None,
-        "height": None,
+        "width": FRAME_WIDTH,
+        "height": FRAME_HEIGHT,
         "num_sampled_graph_points_per_tick": 20,
     }
 
+    def __init__(self, **kwargs):
+        digest_config(self, kwargs)
+        self.x_range = np.array(self.default_x_range)
+        self.y_range = np.array(self.default_y_range)
+
     def coords_to_point(self, *coords):
         raise Exception("Not implemented")
 
@@ -282,12 +288,12 @@ def __init__(self,
                  x_range=None,
                  y_range=None,
                  **kwargs):
-        super().__init__(**kwargs)
+        CoordinateSystem.__init__(self, **kwargs)
+        VGroup.__init__(self, **kwargs)
+
         if x_range is not None:
-            self.x_range = np.array(self.default_x_range)
             self.x_range[:len(x_range)] = x_range
         if y_range is not None:
-            self.y_range = np.array(self.default_y_range)
             self.y_range[:len(y_range)] = y_range
 
         self.x_axis = self.create_axis(