The 'rain' observation value passed in the loop packet is the amount of rain accumulated by the sensor since the last loop report. Sensor: accumulated rain since last loop report) ---> Database: field 'rain'
The 'signal3' observation value passed in the loop packet is the amount of rain accumulated by the sensor since midnight (the 'midnight' of the data logger). Sensor: accumulated rain since midnight ---> Database: field 'signal3' Rain Rate is calculated in software: weewx.conf|[StdWXCalculate]|[[Calculations]]|rainRate = software So on the Seasons report, Current conditions: Rain Today: 0.0mm Rain Rate: 0.0 mm/hr There is a single record in the Database (due to testing and clearing after each test). The fields have: rain: 0.0 rainRate: 0.0 signal3: 17.87 This is because it was not raining during the testing period, but was raining early this morning. That is why 0 for both rain and rainRate. But signal3 has a value of 17.87 mm, the daily rain accumulated since midnight. So on the seasons report it should look like this: Rain Today: 17.87 mm Rain Rate: 0.0 mm/hr Reading through the documentation I saw several references to the term 'dayRain'. So I assumed that was either a constant in weewx or a database field, whether hardware or software derived. I could not find 'dayRain' in the database so I posted this query to make sure. My question then is do I make one change to weewx.conf so that all reports will use signal3 as the daily rain amount, or do I need to go to each report and change them individually. "Just use $current.signal3" Do I put this in the weewx.conf file or in the Season skin.conf file? Craig On Saturday, September 30, 2023 at 1:57:19 PM UTC+13 gjr80 wrote: > Given a number of previous threads by the OP related to writing a driver, > this could be a report issue or a driver issue. Tom covered off the report > issue, but if it is a driver issue then it could be a case of garbage in = > garbage out. Your driver should be emitting loop packets and the rain > field in each loop packet must be the rainfall seen by the station since > the last loop packet. Provided you do this WeeWX will accumulate these loop > packet rain values and emit the total rain for the archive period in an > archive packet. This is the data you will see stored in the database > (appropriately converted given the loop packet unit system and database > unit system). Once you know your incoming data is good then I would be > worrying about what is appearing in reports. > > One other thing, if comparing WeeWX 'day rainfall' to a station provided > equivalent remember that WeeWX calculates the 'day rainfall' value from the > rain data it has seen on that day, so if you start WeeWX part way through > the day and there was rainfall earlier in the day then the WeeWX calculated > total will almost certainly be less than the station provided day rainfall > value. > > Gary > > On Saturday, 30 September 2023 at 10:28:27 UTC+10 tke...@gmail.com wrote: > >> I don't know exactly what you mean when you say your rain is the "amount >> since last report." The field "rain" should be the amount of rain that fell >> during the archive period, so perhaps that's what you're already doing. >> >> You say, "... the Season report shows the correct rain, as reported by >> the station, but sets Rain Today the same as rain." >> >> I'm not sure what you mean by that. The "Rain Today" is the *sum* of >> rain since midnight, not the rain during the current archive period. If >> what you mean is that it's not the same as what is being emitted by your >> hardware as "signal3" (aka "dayRain"), it should be. If not, there's >> something wrong in the calculation that derives the field "rain" from >> "signal3". >> >> Nevertheless, if you want to display exactly what is being emitted by >> your hardware, that's simple enough. Just use $current.signal3. But, be >> sure your hardware is emitting what you think it's emitting. Is it "rain >> since midnight"? Or, "rain over the last 24 hours"? >> >> Final comment: to avoid confusing yourself, why not just use the field >> name "dayRain" instead of "signal3"? I know it's not in the database, but >> new fields are super easy to add: >> >> wee_database --add-column=dayRain >> >> >> -tk >> >> On Fri, Sep 29, 2023 at 4:38 PM Craig Young <craig.y...@gmail.com> wrote: >> >>> My station (hardware) sends both rain (amount since last report) and >>> daily rain (accumulates rain). Currently I am mapping rain to rain in the >>> database and daily rain to signal3 in the database because I could not find >>> any 'dayRain' field. When I run weewx the Season report shows the correct >>> rain, as reported by the station, but sets Rain Today the same as rain. >>> If I want the Seasons report to show the correct daily rain (from the >>> hardware) where should I place it in the DB and do I need to change >>> weewx.conf or skin.conf to use the value? >>> >>> Craig >>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to weewx-user+...@googlegroups.com. >>> To view this discussion on the web visit >>> https://groups.google.com/d/msgid/weewx-user/05844ab4-75a0-435a-a2dd-d85a5ec95d02n%40googlegroups.com >>> >>> <https://groups.google.com/d/msgid/weewx-user/05844ab4-75a0-435a-a2dd-d85a5ec95d02n%40googlegroups.com?utm_medium=email&utm_source=footer> >>> . >>> >> -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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