I'm guessing by 4.9.2 you really meant 4.2.0? Support for StdWXCalculate calculation of deltas was added in v4.2.0, but the necessary XType was not loaded by weewx.conf (under a default install). This was corrected in v4.3.0.
I agree there is not much information describing the use of deltas in StdWXCalculate, I was looking for some information myself for another issue recently and all I found was the comments in the Delta XType declaration <https://github.com/weewx/weewx/blob/master/bin/weewx/wxxtypes.py#L588>. The comments agree with your understanding, though I must confess to not having actually used a delta as yet. I will look to include something on StdWXCalculate deltas somewhere in the documentation. Gary On Wednesday, 16 November 2022 at 23:18:13 UTC+10 bell...@gmail.com wrote: > MQTTSubscribe has support for calculating the delta value of an > observation from the total. I know WeeWX added this support and want to > move people to use the built-in support (or at least have new users use > it). I wasn’t able to find much information on it, so just looking to > verify some information. > > 1. This was added in 4.9.2 (issue #491) > 2. To use it, the following needs to be added to weewx.conf (with the > correct ‘input name’). > > [StdWXCalculate] > > [[Delta]] > > [[[rain]]] > > input = totalRain > > Thanks. rich > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to weewx-user+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/aba80761-7028-4bef-a9c5-52226fc8cce3n%40googlegroups.com.
