3. Follow the procedure given in the Wiki *Cleaning up old 'bad' data
<https://github.com/weewx/weewx/wiki/Cleaning-up-old-'bad'-data>*. Be sure
to work off a copy of your data!

To zero out all rain values for the day 21-04-2017 in your time zone, the
SQL statement for SQLITE would be:

cd /var/lib/weewx
echo "UPDATE archive set rain = 0 WHERE dateTime > 1492725600 and dateTime
<= 1492812000;" | sqlite3 /var/tmp/backup.sdb

If you wish to change only large values (how large?), say over .1, then use

echo "UPDATE archive set rain = 0 WHERE dateTime > 1492725600 and dateTime
<= 1492812000 AND rain > 0.1;" | sqlite3 /var/tmp/backup.sdb

If you are using MySQL, the procedure is similar. If you can't figure it
out, then you should stick with SQLITE, which is easier to administer.

4. I like https://www.epochconverter.com/

-tk




On Sat, Apr 22, 2017 at 4:08 AM, Massimiliano Neri <[email protected]>
wrote:

>
> Hi thomas, 1) The time zone for this season is UTC + 02:00 2) First
> installed the dependency packages autonomously, then installed weewx from
> the .DEB repository. I installed both, Sqlite3 and MySQL. 3) I would like
> to know how to reset the value of rain all day long, and how to change a
> single value. 4) Also the 'datetime' I see is UNIX time? Do you know of an
> online portal to calculate it?
>
> 2017-04-22 0:29 GMT+02:00 Thomas Keffer <[email protected]>:
>
>> We need more information than that.
>>
>> What time zone? UTC+02:00?
>>
>> How did you install? Using setup.py, or Debian? Or, something else?
>>
>> Do you want to zero out all rain data for the day? Or, is there just one
>> bad value? If just one value, roughly how big is the value?
>>
>> Try this and tell me what you get
>>
>> cd /var/lib/weewx
>> echo "SELECT dateTime, rain FROM archive WHERE dateTime > 1492725600 and
>> dateTime <= 1492812000 AND rain > 0;" | sqlite3 weewx.sdb
>>
>> (NB: 1492725600 is midnight 21-04-2017, and 1492812000 is midnight
>> 22-04-2017 in the time zone UTC+02:00.)
>>
>> -tk
>>
>>
>> -tk
>>
>>
>> On Fri, Apr 21, 2017 at 3:09 PM, Massimiliano Neri <[email protected]>
>> wrote:
>>
>>>
>>> Hello Thomas, I would like to reset the content of the rain of the day
>>> on 21-04-2017, how can I make the SQL statement?
>>>
>>>
>>> Il giorno venerdì 21 aprile 2017 21:00:32 UTC+2, Massimiliano Neri ha
>>> scritto:
>>>>
>>>> I am using Weewx for 2 weeks, I need to correct the amount of rain fall, 
>>>> either daily, monthly and annually. You can tell me the procedure for 
>>>> making these fixes. thank you.
>>>>
>>>> --
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>
>
>
> --
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> Via del Castello 4 - 05015 Fabro (TR) - ITALY.
>
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>
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>
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