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Dayfile.txt: Difference between revisions
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→Manipulation outside Cumulus: make cross-ref to list of fields work
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* The (meteorological) date format uses ''two digits for the year''. Edit this file using an editor that treats all fields as text (a text editor or a spreadsheet program that can be instructed ''not'' to recognise special field types). For software (e.g. Excel) with default of recognising formats, ensure that such recognition is turned off, as it is likely to change the dates to either a number representing days since e.g. 31 Dec 1899, or to have four figure years, and then Cumulus will no longer be able to use the log file. (Also the month must be the middle figure, USA convention cannot apply within logfiles). | * The (meteorological) date format uses ''two digits for the year''. Edit this file using an editor that treats all fields as text (a text editor or a spreadsheet program that can be instructed ''not'' to recognise special field types). For software (e.g. Excel) with default of recognising formats, ensure that such recognition is turned off, as it is likely to change the dates to either a number representing days since e.g. 31 Dec 1899, or to have four figure years, and then Cumulus will no longer be able to use the log file. (Also the month must be the middle figure, USA convention cannot apply within logfiles). | ||
* Times are in ''format hh:mm'' | * Times are in ''format hh:mm'' | ||
* Most value fields are in ''real number format x.y'' using your system decimal notation, a few (e.g. bearings, solar, humidity) are ''integers'' (see | * Most value fields are in ''real number format x.y'' using your system decimal notation, a few (e.g. bearings, solar, humidity) are ''integers'' (see [[#List_of_fields_in_the_file]]). Whilst an integer can be used for a real number field, decimals are not allowed in an integer field. | ||
* If you insert a ''lowest or highest value'' into a day, where there was none before, insert a ''timestamp'' too, as a dayfile.txt row is only accepted by the Cumulus editor if a value and any related timestamp are either both present or both absent. (Use a timestamp of your rollovertime 00:00, 09:00 or 10:00 if you have not looked up the precise time). | * If you insert a ''lowest or highest value'' into a day, where there was none before, insert a ''timestamp'' too, as a dayfile.txt row is only accepted by the Cumulus editor if a value and any related timestamp are either both present or both absent. (Use a timestamp of your rollovertime 00:00, 09:00 or 10:00 if you have not looked up the precise time). | ||
* Nulls ',,' are not allowed in the line, so if you do not know the value for a particular field within the line, then type in a zero for integer values and an extreme with opposite value (e.g. -999.9 for a signed decimal maximum, and 999.9 for a decimal minimum) for decimal format (replace the full stops with your decimal separator). | * Nulls ',,' are not allowed in the line, so if you do not know the value for a particular field within the line, then type in a zero for integer values and an extreme with opposite value (e.g. -999.9 for a signed decimal maximum, and 999.9 for a decimal minimum) for decimal format (replace the full stops with your decimal separator). | ||