improve example

Author: archmoj

doc/python/b64.md

@@ -89,13 +89,15 @@ N = 10000
 x = np.random.randn(N)
 y = np.random.randn(N).astype('float32')
 z = np.random.randint(size=N, low=0, high=256, dtype='uint8')
+c = np.random.randint(size=N, low=-10, high=10, dtype='int8')
 
 fig = go.Figure(data=[go.Scatter3d(
     x=b64(x),
     y=b64(y),
     z=b64(z),
+    marker=dict(color= b64(c)),
     mode='markers',
-    opacity=0.1
+    opacity=0.2
 )])
 
 fig.show()
@@ -114,13 +116,15 @@ N = 10000
 x = np.random.randn(N)
 y = np.random.randn(N).astype('float32')
 z = np.random.randint(size=N, low=0, high=256, dtype='uint8')
+c = np.random.randint(size=N, low=-10, high=10, dtype='int8')
 
 fig = go.Figure(data=[go.Scatter3d(
     x=x,
     y=y,
     z=z,
+    marker=dict(color=c),
     mode='markers',
-    opacity=0.1
+    opacity=0.2
 )])
 
 fig.show()