# Calculate a value from temp and dewpoint, get a graph in insights

**URL:** <https://community.homey.app/t/calculate-a-value-from-temp-and-dewpoint-get-a-graph-in-insights/81006>\
**Category:** Questions & Help\
**Created:** [May 23, 2023, 10:41am UTC](https://community.homey.app/t/calculate-a-value-from-temp-and-dewpoint-get-a-graph-in-insights/81006 "2023-05-23T10:41:22Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [May 24, 2023, 12:43am UTC](https://community.homey.app/t/calculate-a-value-from-temp-and-dewpoint-get-a-graph-in-insights/81006/2 "2023-05-24T00:43:25Z")

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> [@Tottemannen](#):
>
> Is it possible to export the graph to a webpage?

That can be done with the apps [InfluxDB](https://homey.app/en-gb/app/homey.influxdb/InfluxDb/) or [Prometheus.io](https://homey.app/en-gb/app/io.prometheus/Prometheus.io/)

Grafana is a nice tool for the graph part.

A webpage can be hosted locally or by a server somewhere on the internet (some call it ‘the cloud’)

Local

> [@\[APP\]\[Pro\] InfluxDb](https://community.homey.app/t/app-pro-influxdb/32405/81):
>
> I just installed influxdb (v1) and grafana using [this howto](https://computingforgeeks.com/how-to-install-influxdb-on-debian-linux/) and it works ok. I just installed it on a Debian 11 server, no docker. Do you see a number other than zero at ‘Measurements’? In what way do you query the database? On the server with influxdb I installed influx client On Debian I did: sudo apt install influxdb-client Open the database: influx -database 'homey' -precision rfc3339 Then the command line changes from ~$ to \> Now enter select …

Internet

> [@\[APP\]\[Pro\] InfluxDb](https://community.homey.app/t/app-pro-influxdb/32405/88):
>
> First, thank you @balmli for great app. Now I have data from InfluxDB Cloud and Grafana and for those they would like to follow, I created two very simple screen by screen guides. I hope you don´t mind if I share it here.

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