Hi everyone, I recently migrated from OpenHAB 1 to OpenHAB 2 and encountered an issue with my Rrd4j charts. Previously, in OH1, I used both MapDB and Rrd4j for persistence. MapDB was for restoring item states, and Rrd4j was for displaying the presence state of several mobile devices. The setup worked flawlessly, with the charts showing either 0 or 1 for presence states. However, after transferring the configuration to OH2, the charts are blank, despite the persistence files updating correctly.
I’ve checked the Rrd4j persistence folder, and all items are listed with updated timestamps every minute. This suggests that the persistence itself is functioning correctly. My rrd4j.persist configuration is as follows:
markdown
Strategies {
// for rrd charts, we need a cron strategy everyMinute : “0 * * * * ?”
default = everyChange
}
Items {
// additionally persist weather info every minute
gChartAnwesenheit* : strategy = everyUpdate, everyMinute
}
In the sitemap, I have:
markdown
Chart item=gChartAnwesenheit label=“Anwesenheit” icon=“present” period=12h
The items are switch items delivering ON/OFF states, which I believe are converted to 0/1 for the charts. I’m wondering if Rrd4j in OH2 handles switch items differently compared to OH1. Has anyone encountered a similar issue or have any suggestions on where to look next? Any help would be greatly appreciated!