# Temperature chart

**URL:** <https://community.openhab.org/t/temperature-chart/141473>\
**Category:** Beginners\
**Tags:** rrd4j, temperature, chart\
**Created:** [November 27, 2022, 5:22pm UTC](https://community.openhab.org/t/temperature-chart/141473 "2022-11-27T17:22:18Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![SzilagyiR](https://community.openhab.org/user_avatar/community.openhab.org/szilagyir/32/72204_2.png) [@SzilagyiR](https://community.openhab.org/u/SzilagyiR)\
**Post date:** [November 27, 2022, 8:02pm UTC](https://community.openhab.org/t/temperature-chart/141473/8 "2022-11-27T20:02:08Z")

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I found this soulution, but I don’t know how to do it, someone please explane me?

> [@Temperature chart with rrd4j](https://community.openhab.org/t/temperature-chart-with-rrd4j/44135/7):
>
> I reinstalled the persistence service, but the charts were still empty. The solution was very simple: because /etc/ and /usr/lib are only accessible as root the file owner of rrd4j was root. chown openhab … and i see the chart-lines. Thank you for your help - often the bugs are soo simple… Greetings!

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