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Calculate Missing Values: Difference between revisions
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=Importing data from other systems for periods when Cumulus was not running=
<big>This section needs more work on it</big>
Essentially, what we need to do, is to compare the format of the data we have available against the format of the relevant Cumulus file.
==CSV outputs from software like EasyWeather==
You might want to read [[EasyWeather_Format#Transferring_past_observations_from_EasyWeather.dat_to_Cumulus|Transferring_past_observations_from_EasyWeather.dat_to_Cumulus]], although that is now an obsolete article, Easy Weather has changed, and Cumulus MX is different from the original Cumulus described there.
The CSV output from such files has fields in the wrong order, may not match our Cumulus units, and does not have a match for each of the fields we need in our Cumulus - see [[Standard_log_files#Importing_pre-Cumulus_data|importing into standard log file fields]]. The solution is to use a CSV file editor, or a spreadsheet, to move the fields into a better order, to apply a formula where necessary to change units, and create any missing fields.
Cumulus does not allow for "null", field not available, except in that it can allow shorter lines with just the fields applying to an earlier release. For MX, [[#CreateMissing.exe|CreateMissing.exe]] can calculate some of the derivatives missing from earlier releases for the [[Standard_log_files]], and that utility can generate the necessary [[Dayfile.txt|dayfile.txt]] lines.
On the Support Forum - Dane - offered a translation service - see [https://cumulus.hosiene.co.uk/viewtopic.php?f=13&t=250 here], but the last post is May 2018, so I am unsure whether it is still available as I type this in July 2021.
==Weather Display==
Please see [[Software#Weather_Display_Converter|Software page - Weather_Display_Converter]]. When you run this routine, it brings up a screen where you select the units that you want the Cumulus [[Standard_log_files]] it produces to use, as the units that weather display uses for the export are fixed.
The routine was written for Cumulus 1, so will not produce all the fields that MX uses, but [[#CreateMissing.exe|CreateMissing.exe]] can calculate some of the derivatives missing from earlier releases, as well as producing [[Dayfile.txt|dayfile.txt]].
==Weather Link log file==
There is a routine, see [[Software#WeatherLink_Converter|Software page - WeatherLink_Converter]] for this. When you run this routine, it brings up a screen where you select the units. Please note, this utility assumes the units you select on that screen apply both to the file (OR MULTIPLE FILES) being converted and to the (multiple) Cumulus [[Standard_log_files]] it produces.
It was written for Cumulus 1, so will not produce all the fields that MX uses, but [[#CreateMissing.exe|CreateMissing.exe]] can calculate some of the derivatives missing from earlier releases, as well as producing [[Dayfile.txt|dayfile.txt]].
==Weather Link Live==
PLEASE CAN SOMEBODY FULLY DOCUMENT THIS.
My understanding is that while MX can read current data from the WLL, you need a "pro subscription" to export past data. I don't know the format of that past data export, but can only guess it can be easily imported into Cumulus.
==OTHERS????===
PLEASE CAN SOMEBODY CONTRIBUTE WAYS OF IMPORTING FROM OTHER SOFTWARE HERE.
A weather station sends values based on its sensors to Cumulus. If Cumulus reports that value without changing it (an offset and/or multiplier might be applied to convert it to the unit wanted by the Cumulus User), the value is described as a '''source value''' because Cumulus is reporting something that has its source elsewhere.
There is not a single list of what weather values are called "source values", because this varies depending on the weather station, and in some cases, a Cumulus User can ask Cumulus to
However, Cumulus does include code that expects a weather station to provide ''a defined minimum set of source values'':
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