Save the data detected by the openplotter to avoid losing it at every reboot

[kste]

Chronograf is actually very powerful for potting data, create dashboards with live data or plots, handy feature is plotting data from say a day before over current. Zoom is good, enter various default times or enter your own dates/times.

Great, you made me discover the dashboard of chronogrf, really interesting to be able to quickly create graphs and store them.

However, my interest in resolving the visualization on the node-red graph remains...