No habmin chart from some data in openhab2

[vzorglub (Vincent Regaud)]

@ROUGEXIII

Is there a way to only store data when a change occurs? Not on a time frequency?

Not with rrd4j

If you want something more flexible and nice graphs then see:

InfluxDB+Grafana persistence and graphing

Store your openHAB item states in an InfluxDB time-series datastore and create highly customizable diagrams with Grafana. These diagrams can in return be included in your sitemap as images. [image] Following this guide, you will install InfluxDB and Grafana, make openHAB store data in an InfluxDB database, make Grafana fetch data from the InfluxDB database and draw diagrams. Finally you can include these diagrams in your openHAB sitemap. Table of Content Starting Point InfluxDB Installation …