See: 
https://weewx.com/docs/5.1/reference/weewx-options/stdcalibrate/?h=stdcalibrate#corrections

michael.k...@gmx.at schrieb am Mittwoch, 15. Januar 2025 um 18:47:38 UTC+1:

> Yes it is. I have a station with two Anemometers and I mix them in the 
> way, that always the higher windSpeed/windGust will be used, if both are 
> there, or the one that's there. Anemometers freeze or sometime I have 
> Signal strength issues. I always take the direction of a specific one (an 
> ultrasonic with heating, that won't freeze), except it isn't there. It's 
> quite a brainf*ck, but it works. Some other Corrections are also done:
>
> [StdCalibrate]
>     
>     [[Corrections]]
>         
>         radiation = luminosity/126.7 if luminosity is not None else None   
>  #gw1000 fix
>         lightning_distance = lightning_distance if lightning_strike_count 
> > 0 else None
>         windSpeed = ws90_windSpeed if 'windSpeed' not in locals() else 
> windSpeed if 'ws90_windSpeed' not in locals() else ws90_windSpeed if 
> ws90_windSpeed > windSpeed else windSpeed
>         windGust = ws90_windGust if 'windGust' not in locals() else 
> windGust if 'ws90_windGust' not in locals() else ws90_windGust if 
> ws90_windGust > windGust else windGust
>         windDir = ws90_windDir if 'ws90_windDir' in locals() and 
> ws90_windDir is not None else windDir
>
>
>
> Rory Gillies schrieb am Mittwoch, 15. Januar 2025 um 17:53:42 UTC+1:
>
>> I know I could just try this but interested to hear if it would work, or 
>> if I have any other options. WeeWX 5.1.
>>
>> Is it possible to use logic in StdCalibrate in weewx.con? Something like 
>> this:
>>
>> [StdCalibrate]
>>     if windSpeed == 0 windspeed = windspeed + 15
>>     if windDir == NULL windDir = windDir + 235
>>
>> The reason is I have a dying anemometer and it's going to take a couple 
>> of weeks to get a replacement installed (it's on my chimney 8m above the 
>> ground). When the wind blows from SSW to WSW above 20mph it sometimes drops 
>> to zero every few loop packets (other times it is perfect).
>>
>> [image: Screenshot 2025-01-15 at 16.49.12.png]
>>
>> I know the observations will be technically incorrect but better than no 
>> wind at all!
>>
>>

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