Hi,
I just made a component that can easily access the echarts chart , receive the value returned from the front-end event., such as the x-axis and y-axis values returned in the click event.
Here is the doc.
Streamlit Echarts Events
a bi-directional streamlit components with pyecharts plots
return event value from js-side to python-side。if no events designed, just display a chart.
Installation
pip install streamlit-ehcarts-events
Usage
only three steps using it , generate a pyecharts object, passing interested events and parameters
Inputs:
chart: pyecharts object
events: list , echarts events, eg. [‘click’,‘dblclick’]
params: list , events value for echarts events,declared in echarts API DOC, eg. [‘name’,‘data’,‘value’]
Outputs:
return status and values.
status
0: get a value
-1: get no value or an error occurs.
return_data
python dictionary, key is params,value is value for params.
Example
from pyecharts.charts import Bar
from st_echarts_events import st_echarts_events
import streamlit as st
bar = Bar()
bar.add_xaxis(["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"])
bar.add_yaxis("商家A", [5, 20, 36, 10, 75, 90])
st.header("Pyecharts Events Feedback Test")
chart=bar
events=['click']
params=['name','value','data']
status,return_data = st_echarts_events(chart=chart,events=events,params=params)
st.markdown("Return data : %s " % return_data)
if you want test the package, deploy environment like this:streamlit template
Notes:
if no data. return ‘no data.’
if error, return error message.
map are not working well so far, need further implement.
Welcome to the Streamlit Community!!! 
more echarts in Streamlit!