Update app.py

app.py

@@ -602,6 +602,32 @@ if st.sidebar.button("Option Chain Visualization", use_container_width=True):
     )
     st.plotly_chart(fig_bar7, use_container_width=True)
 
+    st.markdown("---")  # Add a horizontal line as a visual separator
+    # Price vs. Strike Scatter Plot with OI Sizing
+    # Description: Scatter plot where each point represents an option contract, with the x-axis as strike price, y-axis as option price, and point size proportional to open interest.
+    # Purpose: Visualizes the relationship between option pricing and open interest across strikes.
+    # Implementation: Use strike for the x-axis and lastPrice for the y-axis.  Set the size of each point based on openInterest. Differentiate calls and puts using color or markers
+    st.write(
+        "*Tips: in Price vs. Strike Scatter Plot with Days Left Sizing, Larger points indicate higher open interest, helping to identify popular strike prices.*"
+    )
+    fig_bar7_2 = px.scatter(
+        filtered_ticker_df,
+        x="strike",
+        y="lastPrice",
+        size="daysleft",
+        color="Type",
+        title=f"Price vs. Strike Scatter Plot for {selectedTicker}",
+        labels={"x": "Strike Price", "y": "Option Price"},
+        color_discrete_map={"CALL": "green", "PUT": "red"},
+    )
+    fig_bar7_2.update_layout(
+        xaxis_title="Strike Price",
+        yaxis_title="Option Price",
+        autosize=True,
+        height=600,
+    )
+    st.plotly_chart(fig_bar7_2, use_container_width=True)
+
     st.markdown("---")  # Add a horizontal line as a visual separator
     # Support and Resistance Levels on Price Chart
     # Description: Overlay horizontal lines on the underlying asset's price chart at strike prices with significant open interest.