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Extra Sensor Files: Difference between revisions
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All data is logged in the units which which have been selected by the Cumulus user, so a conversion is applied if the values are read from the weather station in other units, without any ability for any readings to be calibrated.
As at August 2013, Cumulus has no tracking of extra sensor readings, so it does not calculate extremes for these extra sensors (unless it is the Oregon Scientific extra temperature sensor replacing the main one, see below), and extra sensors do not feed into the [[:Category:Ini Files|extreme record tracking files]].
If you did want to try to calculate extremes for yourself, or draw graphs based on these logged extra values, then you must remember that as only spot values are logged, any extremes between the times that spot values are logged are lost. But if you are skilled enough, it is possible to write [[PHP#Incorporating_Script|a script]] to read the file into either an array or database table for further processing. There are advantages in using databases, as Structured Query Language (SQL) makes reading and processing data from a database table easier than the code you would need to write to extract the same information directly from the original file. You might take inspiration from some php scripts available at [https://cumulus.hosiene.co.uk/viewtopic.php?f=18&t=18096 Forum's Create missing topic].
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