How to speed up redraw of graph ?

[UCaGk]

Hi,
I'm using the very nice Plotly graph card on Home Assistant with a Samsung A8 tablet.
But redrawing the graph pushes the tablet to its limits, a page refresh takes about 10 seconds.
The graph has 3 lines, hours_to_show: 24, refresh_interval: 10 and 2 different Y axes.
I can zoom out about 11 days, but 2 days is ok.

Any suggestions?

Best

[dbuezas]

You can either use long term statistics with auto period (you can configure when to switch between different resolutions/periods) to reduce both data and rendering time. Alternatively you can combine a resample filter with a $ex so that the resampling resolution changes depending on how much is on screen (with get('visible_range')

[UCaGk]

Thank you dbuezas,
I think it is enough if the data is saved for 2 days at 10 s intervals. The x resolution of the display (e.g. 300 px) is then sufficient for the graph. Then the rendering time should be quite short.
Unfortunately I don't know how to specify this in the Home Assistant yaml code.
It would be great if you had an example for this.

[dbuezas]

Look into template sensors in home assistant, then you'll have a new sensor with the data stored at the specified time resolution

[UCaGk]

Sorry, thats not enough information for me, i'm not sure what to do.

[dbuezas]

https://www.home-assistant.io/integrations/template/#trigger-based-template-binary-sensors-buttons-images-numbers-selects-and-sensors