1. There are defaults and you only have to configure any settings that you
want to be different. So in your example you would only have to override
the extractor.
[Accumulator]
...
[[XField]]
extractor = last
2. I don’t know the answer, but they have a different meaning. See,
http://www.weewx.com/docs/4.10/devnotes.htm#value_None.
If you are adding new observations be sure to read up on units and
unit_groups,
http://www.weewx.com/docs/4.10/customizing.htm#customizing_units.
On Sunday 7 January 2024 at 04:34:28 UTC-5 Remy Lavabre wrote:
> Thank you for the answer ! Perfect...
>
> Only two questions still bothers me:
>
> - 1/ I added an “XField” field to my weewx.sdb database. This XField
> corresponds to a simple parameter such as temperature or pressure. It is
> incorporated into the "PacketsLoop".
>
> Do we absolutely have to declare [Accumulator] in weewx.sdb as follows:
>
>
>
>
>
>
>
> *[Accumulator] ... [[XField]] accumulator = scalar
> adder = add merger = minmax extractor = last*
>
> or are there default parameters in weewx in a (new) field of unknown type
> in a database?
>
>
> - 2/ Concerning "PacketsLoop": the weewx documentation stipulates that
> they can be complete (all fields in the database) or partial.
>
> But are the two PacketsLoops below interpreted in the same way?
>
> data1 = {'dateTime': mydatetime, 'usUnits': 'METRIC', 'outTemp': '31',*
> 'outHumidity': None*, 'dewpoint': '28'}
> data2 = {'dateTime': mydatetime, 'usUnits': 'METRIC', 'outTemp': '31',
> 'dewpoint': '28'}
>
> Thank you for your help - Kind regards
>
> Le samedi 6 janvier 2024 à 22:34:41 UTC+1, [email protected] a écrit :
>
>> check out, https://github.com/weewx/weewx/wiki/Accumulators
>>
>> On Saturday 6 January 2024 at 10:27:48 UTC-5 Remy Lavabre wrote:
>>
>>> Good morning,
>>>
>>> Wishing to write a driver for WeeWX in order to automatically retrieve
>>> and integrate AWEKAS data into the weewx.sbd database, I have a question
>>> regarding the management of "PacketsLoop" data:
>>>
>>> The Weewx documentation states that for temperatures, it is an average
>>> of the "packetsloop" received during the time period set in weewx.conf (300
>>> seconds for example), that for rain it is the maximum of packetsloop. -> OK
>>>
>>> But for the other data? What about it?
>>>
>>> If we add personal fields to the database, such as electricity
>>> consumption. What will be the value of this field in the database -> An
>>> average of packets received, the maximum value, the last?
>>>
>>> And is it possible to specify to wewx (and if so where and how...), what
>>> type of result we want to have with the aggregation of a field from several
>>> loop packets?
>>>
>>> thank you
>>>
>>
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