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Amending dayfile: Difference between revisions
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→Important Rules when editing dayfile.txt: 3.20.0 edit
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If you are editing dayfile.txt outside the Cumulus 1 or MX software, there is the danger of changing something that prevents Cumulus from understanding the file when it next tries to use it.
== Warning if editing outside MX ==
You need to understand the following difference between the legacy Cumulus 1 and MX. In the legacy software (and early MX releases), "dayfile.txt" is read by the software if any output reports past days. In later MX releases, the only time the file is read is when the software is restarted, it is not read again.
From MX release 3.9.2 - b3097, Historic Charts were added to both the interface and the default web pages. As a consequence, when you start MX in this release (or any subsequent release), the entire content of dayfile.txt is held internally (i.e. in RAM), and it is these internally held values that are used by the .json api/files that feed these [[Highcharts - Historic]] plots. MX will append an additional array when it stores a new line in the file. The MX in-built editor actually displays/edits the internally held data, and then writes back (including any deletions or edits) that internal array into the file.
'''Prior''' to release 3.20.0 - b3200, if you were to edit the "dayfile.txt" using an external editor without stopping MX, any change you make is not seen by internal array, and such external edits would be lost should you (in the same MX session) use the internal editor. To propagate your external edits, you need to first stop, and then restart MX, and then the internal array will match the file.
''From release 3.20.0 - b3200,'' there is a utility provided that can copy what is held in the daily summary log file and update the internal array. Access this utility from the '''"Utils" menu''' added to the interface at this release.
== General Editing Rules ==
These rules should be followed whatever Cumulus file you edit externally.
# Take a copy of the file that can be reverted to if there is a subsequent problem, and you have messed up the file that Cumulus (1 or MX) is now trying to use.
=== File specific Editing Rules ===
These additional (above rules still apply) rules are specific to any external editing of "dayfile.txt".
[[File:Open office (editing cumulus log files).png| right]]
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