Tom Keffer schrieb am Dienstag, 9. März 2021 um 16:47:39 UTC+1: > Well, you could use aggregate type 'cumulative', then apply an appropriate > label for individual plots. > You can understand why I want to avoid having entries for 'ET_integral', > 'rain_integral', and all the other possible extensive quantities. >
Oh, there's a huge difference between rain etc. and solar radiation. Rain and ET are really cumulative. You can summarize them and get the value. And the unit label does not change. Not so with solar radiation and solar power plant power. You need to multiply each single radiation reading by the respective observation interval. And only after that you can summarize the products. It is especially important, if the interval changes sometime. Energy is not the sum of power readings (or radiation reading, respectively). Energy is power (radiation) multiplied by time. Or power (radiation) integrated over time, if the readings are not constant. So for 'rain' and 'ET' it's 'sum'. For energy it's something else. -- You received this message because you are subscribed to the Google Groups "weewx-development" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-development/3473e9f0-d4bc-4974-9f8a-bd7402bc35bcn%40googlegroups.com.
