Plolty Click Events in Streamlit

app.py

import plotly.express as px
import streamlit as st

# Sample data
df = px.data.iris()

# Create the Plotly figure
fig = px.scatter(df, 
                 x="sepal_width",
                y="sepal_length",
                custom_data = ['species','species_id'])

# Display the chart with event handling
selected_points = st.plotly_chart(fig, key="iris_chart", on_select="rerun")

# Handle the selection event
if selected_points and selected_points['selection']["points"]!=[]:
    customdata = selected_points['selection']["points"][0]['customdata']
    c1,c2 = st.columns(2)
    with c1:
        st.write("Selected points:")
        st.write(selected_points['selection']["points"])
    with c2:
        st.write(f'Species is: {customdata[0]}')
        st.write(df[df.species_id == customdata[1]])

plot.selections.in.streamlit.mp4