How to making echarts re-render on data change or after a period?

🧩 Custom Components
1

Hi there,

I’m trying out the streamlit-echarts component. I want my echart to refresh on data change or after a few seconds (like a real-time chart update). My approach was putting st_echarts(options, key=key) inside a for loop:

for i in range(5):

options = {
“xAxis”: {
“type”: “category”,
“data”: [“Mon”, “Tue”, “Wed”, “Thu”, “Fri”, “Sat”, “Sun”],
},
“yAxis”: {“type”: “value”},
“series”: [
{“data”: [820, 932, 901, 934, 1290, 1330, 1320], “type”: “line”}
],
}
options[‘series’][0][‘data’][0] += 80
st_echarts(options=options, key=‘chart’)

But this results in error:

DuplicateWidgetID: There are multiple widgets with the same key='chart'.

To fix this, please make sure that the key argument is unique for each widget you create.

Is it possible in the current version of streamlit-echarts?

Thanks!

2

What do you need the key parameter for? What happens if you remove it?

3

try this：
st_echarts(options=options, key=‘chart’+str(i))

4

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