rotate labels

    
      
diff --git a/notes-en/assets/licenses-heatmap.png b/notes-en/assets/licenses-heatmap.png
index 61948bc..62997c8 100644
Binary files a/notes-en/assets/licenses-heatmap.png and b/notes-en/assets/licenses-heatmap.png differ
diff --git a/notes-en/ncd.md b/notes-en/ncd.md
index 8efc0fd..5e27bb2 100644
--- a/notes-en/ncd.md
+++ b/notes-en/ncd.md
@@ -228,7 +228,7 @@ df = pd.DataFrame(distances, columns=['name1', 'name2', 'distance'])
   )
   + gg.theme(
     figure_size=(12, 8),  # make chart bigger
-    axis_text_x=gg.element_text(angle=30),  # rotate ox labels
+    axis_text_x=gg.element_text(angle=90),  # rotate ox labels
   )
 )        
 ```