[weewx-user] Re: Calculating rain delta

[bell...@gmail.com]

Gary,
Thanks. I did mean 4.2 (wind and 4.9 is on my mind). I passed the info 
along.
rich

On Wednesday, 16 November 2022 at 17:41:32 UTC-5 gjr80 wrote:

> 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 
> . 
> 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
>>
>

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[weewx-user] Re: Calculating rain delta

[gjr80]

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 
. 
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
>

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