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Temp spike removal not working

From build 3044 the development baton passed to Mark Crossley. Mark has been responsible for all the Builds since. He has made the code available on GitHub. It is Mark's hope that others will join in this development, but at the very least he welcomes your ideas for future developments (see Cumulus MX Development suggestions).

Moderator: mcrossley

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Atlas
Posts: 43
Joined: Wed 04 Jun 2014 3:36 pm
Weather Station: Davis Vantage Pro2 Plus
Operating System: Win 10 Pro x64 4 GB RAM
Location: Murcia, Spain

Temp spike removal not working

Post by Atlas »

Hi

I've set a temperature spike removal of 10ºC and occasionally (in storms generally) my Davis has spikes that are recorded and not skipped more than this 10ºC spike.

Is a bug or I've to set the spike removal any other way ?? it's annoyed to have to edit logs etc etc

Thanks for this great application
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Davis Vantage Pro 2 Plus
https://www.meteoarchena.es
sfws
Posts: 1183
Joined: Fri 27 Jul 2012 11:29 am
Weather Station: Chas O, Maplin N96FY, N25FR
Operating System: rPi 3B+ with Buster (full)

Re: Temp spike removal not working

Post by sfws »

Atlas wrote: Wed 13 May 2020 7:24 am I've set a temperature spike removal of 10ºC and occasionally (in storms generally) my Davis has spikes that are recorded and not skipped more than this 10ºC spike.
It may be that MX is deliberately ignoring spike settings for a David station, based on what I quote below for Cumulus 1. There is not enough documentation about Cumulus MX for me to check how it works specifically for Davis stations, and it might take me a while to find the relevant bit of the C# code, so I don't know. It might be a good idea for you to post a request in the Cumulus MX Development Suggestions sub-forum to see if this can be implemented.

The documentation for Cumulus 1 suggests that spike removal is intended for La Crosse and Fine Offset stations, and I found on https://cumuluswiki.org/a/Cumulus.ini#Spike_Removal it specifically says
As Cumulus does not check station type before applying any of these settings, ensure for Davis stations (these do not have spike problems) the spike removal filters are set to the defaults shown below.
I have to make it clear that the documentation is not always updated when functionality changes, and there is a possibility this is out of date. It seems strange to me that if the settings are ignored, people should be instructed to check filters are set to default values. I did a quick search with "Davis spike" on the Cumulus 1 sub-forum and got nothing useful. I also used the same search on the Davis sub-forum and got lots of results including viewtopic.php?f=6&t=14818&p=114549&hili ... es#p114549, confirming that Davis stations do have spikes but Cumulus 1 could not correct for them, you might want to do that search and find out more.
Atlas
Posts: 43
Joined: Wed 04 Jun 2014 3:36 pm
Weather Station: Davis Vantage Pro2 Plus
Operating System: Win 10 Pro x64 4 GB RAM
Location: Murcia, Spain

Re: Temp spike removal not working

Post by Atlas »

Hi thanks for answering

Indeed I have a sensirion SHT75 homemade sensor for the Davis and rarely when it rains and it's windy maybe the sensor is not very well isolated so I have (not always) these undesired spikes.

I forgot to see that information on Cumulus wiki so I'll suggest to implement that in that subforum.
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Davis Vantage Pro 2 Plus
https://www.meteoarchena.es
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mcrossley
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Re: Temp spike removal not working

Post by mcrossley »

As far as I recall spike removal does not apply to Davis stations.
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