- What Grafana version and what operating system are you using?
8.2.1 - Docker
- What are you trying to achieve?
I want to display a graph with a temporary battery consumption for my PHEV vehicle,
And a metric with max, min, median, percentile consumption for a given dashboard period.
- How are you trying to achieve it?
I have a time series of battery % left and total mileage.
derivative function to get the difference in last 5 minutes (this is how often car updates the details on cloud while travelling)
Using this queries for calculating the mileage and used battery for every time series:
# kWh SELECT derivative(mean("value"), 5m) *15 / 100 FROM "%" WHERE ("entity_id" = 'remaining_battery_percent') AND $timeFilter GROUP BY time(5m) fill(null) # km SELECT derivative(mean("value"), 5m) FROM "km" WHERE ("entity_id" = 'mileage') AND $timeFilter GROUP BY time(5m) fill(null)
- What happened?
I was trying to do some transformation on both queries from the series, but unable to find division as I would like to do kWh/km and some scaling to get kWh/100km as a result
Is there a way to do the division transformation, or do I need another device that will do calculation every 5 mins and push already ready to use kWh series into the InnoDB?