Line_charts are slow, even with low amount of data points

[randyzwitch]

Hi @kevinlinxc -

I suspect the issue you are running into is the Streamlit processing model, not that line_charts themselves are particularly slow. There’s another thread going on right now about trying to display data with high frame rates, perhaps you could modify that approach:

Best (fastest) practice to display live 2D data

Dear all! I have a detector which produces 2D images at video rates and higher. However, for live imaging rates in the range 10 Hz and more would be sufficient. Data comes as numpy arrays. I face problems, when I want to display the data at the wanted rates. The following code mocks up different ways to do this with streamlit. I am by no means a python - and especially no asyncio - expert, though. display, get the data, rerun get the data, display, rerun do displaying and data taking asynch…

Best,
Randy