Update app.py

app.py

@@ -315,7 +315,10 @@ def server(input, output, session):
             "delay_type": "throttle",
             "clip": True,  # This helps constrain the brush to the plot area
             "fill": "#00000033",  # Optional: sets a semi-transparent fill
-            "stroke": "#000000"   # Optional: sets the brush border color
+            "stroke": "#000000",   # Optional: sets the brush border color
+            "brushOpts": {
+                "containment": "svg"  # Constrain brush to the SVG area
+        }
         }
             
     
@@ -542,6 +545,7 @@ def server(input, output, session):
 
             p.set(0.6, "Creating plot...")
 
+            fig, ax = plt.subplots(figsize=(8, 8))
 
             ploter.final_plot(
                 df=df,