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Calculate Missing Values: Difference between revisions
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==CreateMissing.exe==
This is only available if you already have MX installed and have been using it. Put simply, this utility updates [[Standard_log_files#Number_of_fields_per_line_varies_by_release|MMMYYlog.txt]] lines as it works through that file to work out daily extremes in order to recreate [[dayfile.txt]].
These notes relate to "Create Missing Version 1.1.0" which is for "Cumulus MX release 3.12.0" and above. At the time of amending this section Create Missing version 1.0.2 had been tested and was found to have a bug.
# options (use zero bearing, use 10 minute wind average, use speed or gust for wind average calculation, fix maximum humidity, read or calculate dew point, read or calculate wind chill, synchronisation time, , set clock option, read or calculate pressure trends, log extra sensors or not, ignore station clock or not, round wind speeds or not, air quality sensor or not, check that minimum number of sensors are updating or not, time for averaging wind bearings, time for averaging wind speed, and time for peak gust)
The utility program, CreateMissing.exe, uses the same module to calculate derived values (like dew point, wind chill, apparent temperature, feels like, and Humidity Index) from source values as CumulusMX.exe. This is how it is able to [[Standard_log_files#Number_of_fields_per_line_varies_by_release|insert missing fields in the standard log files]]. As it processes each line in any standard log file, if a particular field is missing, it will calculate it from other fields in the line if it can. The utility program, CreateMissing.exe, can update the various [[:Category:Ini Files]] with any new extremes found while it is calculating new fields for any standard log file.
The utility program,CreateMissing.exe, looks in the [[Data folder|data sub-folder]] to see if dayfile.txt exists (if it does, its file name has a '''.sav''' suffix added after the ''.txt''). If a file with .sav suffix already exists, the utility program will stop, as it cannot create a file if it already exists.
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