stop weewx and restart it after you make any change to the  weewx.conf

On Monday, August 9, 2021 at 4:57:48 PM UTC+3 [email protected] wrote:

> Thanks for pointing me in the right direction, unfortunately your 
> suggestion did not fix the persisting 12mile lightning_distance output.   I 
> tried the following 4 corrections one at a time in weewx.conf:
>
> [[Corrections]]
> lightning_distance = lightning_distance if lightning_strike_count  >  0 
> else None       # no change, persistent 12 mile lightning distance values 
> in the absence of lightning strikes
>
> lightning_distance = None if lightning_strike_count < 1 else 
> lightning_distance    # no change, persistent 12 mile lightning distance 
> values in the absence of lightning strikes.
>
> lightning_distance = None       # results in NULL for all lightning 
> distance values in database
>
> lightning_distance = lightning_distance if lightning_strike_count > 0 else 
> 0.0       # gives lightning distance valve of zero when there are no 
> lightning strikes,  this is close to what I want, but I rather have NULL 
> valves for lightning_distance when strike count is zero.
>
> Its strange that lightening_distance can be set to NULL with the third 
> correction, but not the first or second correction.   Yet the if, else 
> seems to be working in the fourth correction.   
>
> On Sunday, August 8, 2021 at 10:43:19 AM UTC-4 [email protected] wrote:
>
>> I use this line in weewx.conf and it works ok with seasons skin.. you can 
>> try it
>>
>> [StdCalibrate]
>>
>>     [[Corrections]]
>>
>>         lightning_distance = lightning_distance if lightning_strike_count 
>> > 0 else None
>>
>> On Sunday, August 8, 2021 at 4:09:43 AM UTC+3 [email protected] wrote:
>>
>>> I several questions about data and graphing of AcuRite 06045M lightning 
>>> detector.  I am using "rtl_433" and "rtl_4233 mqtt auto discover" addons in 
>>> home assistant to aquire data from AcuRite 06045M and  MQTTSubscribeDriver 
>>> to import data into weewx. Weewx is installed on raspberry pi.    I have 
>>> set up belchertown skin for weewx, added lightning detector count and 
>>> distance to database and I can graph lightning count and distance using 
>>> belchertown skin.
>>>
>>>  Looking at passing thunderstorm today, I got nice uptick in lighting 
>>> counts which correlated with decreased lightning distance (fig enclosed).  
>>>  But the lightning distance reading before the storm and after the storm 
>>> was a steady 12.0 miles, like that is the default value when no lightning 
>>> is being detected.  I would like to remove those distracting 12-mile data 
>>> points, since they don't contribute to the graph.   I was wondering how I 
>>> [image: 
>>> Screenshot (9).png]can do that and why lightning distance reading goes 
>>> to exactly 12 when there is no lightning activity.   
>>>
>>> Here is my chart entry in belchertown graphs.conf file:
>>>
>>>
>>>      [[chart5]]
>>>         title = Lightning data
>>>         [[[lightning_distance]]]
>>>            name = Lightning distance
>>>            type = scatter
>>>            lineWidth = 0
>>>            yAxis = 1
>>>            mirrored_value = true
>>>            zIndex = 1
>>>            aggregate_interval = 900 # 15 min
>>>            aggregate_type = avg
>>>            color = "#00ff00"
>>>         [[[lightning_strike_count]]]
>>>            name = Strike count / 15 mins
>>>            type = column
>>>            yAxis_label = "Strikes/15min"
>>>            aggregate_interval = 900 # 15 min
>>>            aggregate_type = sum
>>>            color = "#BECC00"
>>>            tooltip_date_format = "dddd LL"
>>>
>>> I use "mirrored_value = true" for lightning distance rendering for two 
>>> reasons, first as lightning distance decreases there is higher chance of 
>>> approach thunderstorm (high ~ bad on chart) and second it minimizes the 
>>> overlay of the lighting strike distance data on the lightning strike 
>>> count.  
>>>
>>> Any ideas why there is a constant 12.0 miles in distance without 
>>> lightning activity and how can I remove the 12.0 mile values preferably 
>>> easily.  
>>>
>>

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