Persistence sumSince() doesn't output a valid numer, only zero

[StefanMUC (Stefan)]

@rossko57

I think you will find this relevant (you can’t sum strings)
Persistence: sumSince / influxdb / sumSince

Hmm, are you sure? You can see in Grafana that it doesn’t save strings but numbers (0 = CLOSED, 1 = OPEN), so one should be able to sum that.

@rossko57

Note also you probably want your count as a plain Number type, not Dimendionless which is really for ratios or percentages.

No, that already got answered:

Count number of times a door got opened

I respectfully don’t agree. Dimensionless means exactly that without dimension. A plain number Type and a Dimensionless number are more or less the same. The fact that bindings provide percentage value under this type is because that’s the only one that fits. I agree with that, you’ll have to decide a period of counting. Maybe reset the couter every night, week, month… A button to reset the counter is also a good idea.

I don’t want to save/exchange plain numbers, OpenHAB has a Units Of Measurements concept, and I want to use that - so I have to pick the correct UOM type.