Changed default selection to Volcano.

app.py

@@ -220,7 +220,7 @@ demo = gr.Interface(
     fn=transform_image,
     inputs=[
         gr.Image(type="filepath"),
-        gr.Dropdown(["Pinch", "Spiral", "Shift Up", "Bulge", "Volcano"], value="Bulge", label="Function"), 
+        gr.Dropdown(["Pinch", "Spiral", "Shift Up", "Bulge", "Volcano"], value="Volcano", label="Function"), 
         gr.Checkbox(label="Randomize inputs?"),
         gr.Slider(0, 0.5, value=0.25, label="Radius (as fraction of image size)"),
         gr.Slider(0, 1, value=0.5, label="Center X"),