5,838
edits
FAQ: Difference between revisions
m
→Where does Cumulus get its this month and this year rainfall totals from?
No edit summary |
|||
|
* The rainfall totals (for this month, year, and season), are initialised when Cumulus is (re-)started by adding up the corresponding daily totals in [[dayfile.txt]] and storing those sums in memory.
**Don't forget that Cumulus uses binary arithmetic to base 2, that does not correctly represent what in base 10 are decimal places, so you may see slight errors for those using inches and expecting correctness to decimal places (read up this on internet if you don't understand binary arithmetic).
** The rainfall totals shown on the ''This period'', ''This month'', and ''This year'' screens within the '''View''' menu in Cumulus 1 are generated by adding up the daily rainfall totals found in [[dayfile.txt]] for the selected period. Using default settings via '''View''' menu in Cumulus 1, ''This month'' screen for this month excluding today, ''This year'' screen for this calendar year (this does always start on 1 January, unless you only started using Cumulus after that) excluding today. ''Note any rainfall for the current (meteorological) day is excluded as the latest dayfile.txt row is for yesterday.'' Totals can be shown for any past period, by selecting the required dates, the figures are recalculated when you press the ''Update display'' button and will include all days available in dayfile.txt for the chosen period. ''Important note: The view menu 'This year' screen always calculates the total for a selected calendar year starting in January.''
** Cumulus MX builds below 3008 do not include rainfall for year to date, other rainfall calculation items were fixed in 3022 to 3042, you should use latest build for best functionality.
| |||