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Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Cumulus MX V4 beta test release 4.0.0 (build 4017) - 17 March 2024
Legacy Cumulus 1 release v1.9.4 (build 1099) - 28 November 2014 (a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
Build 975 - Rain Threshold value
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Build 975 - Rain Threshold value
Hi Steve,
Using Build 975 I have entered RainDayThreshold=-1 in the Station section of Cumulus.ini. This equates to 0.01" as the starting point for determining a rain day.
I'm still chewing over whether I would like to increase this to ignore dew collection when on an otherwise dry day 0.01" of dew then counts towards my rain day count. Setting it to 0.02" would reduce my rain day count in the current month from 17 to 13. You need all the help you can get when you live near Manchester!
If I want to set the threshold to 0.02" what would that new entry change to?
Using Build 975 I have entered RainDayThreshold=-1 in the Station section of Cumulus.ini. This equates to 0.01" as the starting point for determining a rain day.
I'm still chewing over whether I would like to increase this to ignore dew collection when on an otherwise dry day 0.01" of dew then counts towards my rain day count. Setting it to 0.02" would reduce my rain day count in the current month from 17 to 13. You need all the help you can get when you live near Manchester!
If I want to set the threshold to 0.02" what would that new entry change to?
- steve
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Re: Build 975 - Rain Threshold value
That's the default, so you don't actually need to add it. And it does actually create that entry itself, so be careful you don't end up with two entries, which might cause confusion in future - I don't know whether the first or last entry is the value that you end up with.RayProudfoot wrote:Using Build 975 I have entered RainDayThreshold=-1 in the Station section of Cumulus.ini. This equates to 0.01" as the starting point for determining a rain day.
0.02If I want to set the threshold to 0.02" what would that new entry change to?
I haven't actually tested this setting with inches, so it'll be interesting to see what happens...
Steve
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Re: Build 975 - Rain Threshold value
It definitely didn't create that entry when I started that build. Anyway, changing it to 0.02 has correctly reduced my rain day count to 13.steve wrote:That's the default, so you don't actually need to add it. And it does actually create that entry itself, so be careful you don't end up with two entries, which might cause confusion in future - I don't know whether the first or last entry is the value that you end up with.
I haven't actually tested this setting with inches, so it'll be interesting to see what happens...
- steve
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Re: Build 975 - Rain Threshold value
It writes the cumulus.ini file when you change any settings, or close it down.RayProudfoot wrote:It definitely didn't create that entry when I started that build.
Steve
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Re: Build 975 - Rain Threshold value
Ah, I was expecting it to be created when Cumulus started. No matter. It looks to be working okay. This should help others who want to try it.steve wrote:It writes the cumulus.ini file when you change any settings, or close it down.RayProudfoot wrote:It definitely didn't create that entry when I started that build.
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Re: Build 975 - Rain Threshold value
I closed Cumulus and checked the entry. It now shows RainDayThreshold=0.0199999995529652
Interesting it should convert 0.02 to that.
Interesting it should convert 0.02 to that.
- steve
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Re: Build 975 - Rain Threshold value
It's because most decimal floating point numbers can't be stored exactly in binary. It will round the value to 3 decimal places (i.e. 0.020) before it uses it.RayProudfoot wrote:I closed Cumulus and checked the entry. It now shows RainDayThreshold=0.0199999995529652
Interesting it should convert 0.02 to that.
Steve
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Re: Build 975 - Rain Threshold value
so to get 0.02 in wood you put in 0.02 or 0.020?
Beau
Beau
- steve
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Re: Build 975 - Rain Threshold value
Either; they're exactly the same.n9mfk wrote:so to get 0.02 in wood you put in 0.02 or 0.020?
Steve
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Re: Build 975 - Rain Threshold value
Is -1 means that when it rains it will count 0.2 mm now than 0.3 mm that it counted before?
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Re: Build 975 - Rain Threshold value
The threshold was zero before, not 0.3 mm.morfeas2002 wrote:Is -1 means that when it rains it will count 0.2 mm now than 0.3 mm that it counted before?
Steve
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Re: Build 975 - Rain Threshold value
That would depend on you rainguage and station really. If the guage will only measure amounts of 0.3mm then the new threshold feature is irrelevant since the station will only record minimum of 0.3mm.morfeas2002 wrote:Is -1 means that when it rains it will count 0.2 mm now than 0.3 mm that it counted before?
However, for those of us who have modified our gauges to measure smaller amounts (mine will measure 0.1mm or 0.111mm to be precise), then the threshold setting of 0.2mm will omit days with 0.1mm from the registered raindays.
Nice feature Steve.
Bob
Bob
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Re: Build 975 - Rain Threshold value
So what value do I put in there if I want the threshold to be 0.5mm?
- steve
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Re: Build 975 - Rain Threshold value
0.5SUBYDAZZ wrote:So what value do I put in there if I want the threshold to be 0.5mm?
Steve
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Re: Build 975 - Rain Threshold value
Ok, my mistake, i understand now.The station measures 0.3 mm and it can not be changed from the panel.
Is it possible to change it from cumulus to count 0.2 mm or it can`t be done?
Is it possible to change it from cumulus to count 0.2 mm or it can`t be done?