Thanks Tom,
This would be a solution for dayRain values received from the Davis LOOP
packets. I would opt for such change.
BTW. What would be the maximum difference between the time stamps of
internal clock of the vantage console and the clock of the weewx computer?
I can imagine that in some cases the dayRain value would be reset to zero
BEFORE midnight which also could generate problems.
Another thing.
I also receive Vantage Pro data from the meteostick driver which has no
"dayRain" data itself, so in this case weewx will calculate it somewhere.
I will check both dayRain loop message loggings round midnight to see if
the problem occurs only with the vantage driver.
If the dayRain values of the meteostick have good time stamps I might
consider to set the calculation to software for the Vantage driver, eg.:
[StdWXCalculate]
[[Calculations]]
dayRain = software
Luc
On Tuesday, 30 May 2017 16:06:11 UTC-3, Tom Keffer wrote:
>
> The value of dayRain is from the Davis LOOP packets, which are,
> unfortunately, not timestamped by the Davis logger. The driver must add the
> timestamp.
>
> So, it is very much possible that the packet was created in the logger
> shortly before midnight, then weewx downloaded it just after midnight,
> timestamping it 2 seconds after midnight.
>
> I suppose we could change the driver so that it zeroes out the value of
> dayRain for the first packet of the day, provided that the time is within a
> few seconds of midnight. That violates our general philosophy of not
> messing with data coming off an instrument, but I can see good reasons for
> doing it.
>
> -tk
>
>
> On Sun, May 28, 2017 at 4:28 AM, Luc Heijst <[email protected]
> <javascript:>> wrote:
>
>> The meteotemplate uploader use value 'dayRain' to populate meteotemplates
>> 'R' value.
>> The template can send either archive data or loop data.
>>
>> When loop data is selected the 'dayRain' value is not reset to 0.0 at the
>> exact start of a new day but shortly after.
>> For my Davis Vantage Pro station I got recently in Meteotemplate a
>> registration of 29.0 mm rain with time stamp 00:00:02.
>> The result was a meteotemplate database value of 29.0 mm rain for the
>> first archive period that day
>>
>> Is there a solution for this in weewx?
>>
>> Luc
>>
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