The files today.ini and yesterday.ini are used by Cumulus to store some counts, plus the Highs and Lows (and their timestamps) for key parameters as reached on each of the two days, for Cumulus 1 these are source for figures that appear on the main screen, for Cumulus 2 and 3(MX) they appear on the dashboard you can view. These files are normally located in the "Data" sub-folder of the path where your Cumulus.exe is installed. See FAQ on location of data log files for where else to look.
Refer to the article on today.ini for information on how Cumulus generates yesterday.ini from today.ini.
- Don't try to edit 'yesterday.ini' within a few minutes before or after Cumulus performs a rollover (either at rollover time or on restarting if it was not running at rollover time) as Cumulus needs exclusive access to delete the old file and create a new one.
Sections in yesterday.ini
See example at end of page. Each section is headed with something in square brackets , then a number of parameters in format "attribute=value". Most of the parameters correspond to fields in the dayfile.txt log file, yesterday.ini exists only to provide an easier way for Cumulus 1 to display yesterday's extremes on its main screen. The file is re-created at each rollover time, and read whenever Cumulus is restarted. This means that there will not normally be a conflict if you access the file outside Cumulus, although there is no point in editing the file as its contents are already in dayfile.txt, that is where any edits to remove rouge values from yesterday should be made. The sections (after the first [General]) can be in any order, Cumulus will maintain whatever order the sections are currently in. For readability you can insert blank lines into this file, Cumulus will not mind. Do not however introduce any punctuation nor change the format of any parameter line.
Differences between Cumulus 1 and Cumulus MX
Most of the sections are found in both versions of the software, and the contents are identically formatted, as there is no date/time parameters in this log file. However, MX has introduced an extra section for Feels Like at version 3.6.0, and in the future it might change again.
Remember, the symbol for decimal point might vary:
If you are moving from Cumulus 1 to Cumulus MX, then you might want to copy other files from your Cumulus 1 data folder to within your cumulus MX structure; but let MX create a new yesterday.ini log file.
See Average_temperature for one key transformation between today.ini and yesterday.ini, no ET parameters are retained, plus there are some wind and some rain parameters not copied from today.ini to yesterday.ini. This log file is exactly same in Cumulus 1, 2, and 3 (MX), apart from the extra [FeelsLike] section introduced from version 3.6.0.
NOTE: Yesterday's total rainfall from weather station is stored in today.ini, but yesterday's total rainfall from RG-11 sensor is stored in yesterday.ini.
[General] Date=28/04/2011 [Wind] Speed=7.2 SpTime=09:00 Gust=15.9 Time=12:15 Bearing=315 Direction=NW Windrun=35.3391151428223 DominantWindBearing=230 [Temp] Low=5.6 LTime=05:34 High=21.0 HTime=14:46 HeatingDegreeDays=3.76118206977844 CoolingDegreeDays=0.702986478805542 AvgTemp=12.4447975158691 [Pressure] Low=29.72 LTime=09:00 High=29.85 HTime=22:12 [Rain] High=1.2 HTime=00:34 HourlyHigh=0.899999976158142 HHourlyTime=02:04 RG11Yesterday=0 [Humidity] Low=49 High=99 LTime=14:34 HTime=00:34 [Solar] SunshineHours=0 HighSolarRad=0 HighSolarRadTime=09:00 HighUV=0 HighUVTime=09:00 [HeatIndex] High=21 HTime=14:46 [AppTemp] Low=3.98110413551331 LTime=05:34 High=21.0052318572998 HTime=15:50 [WindChill] Low=5.59999990463257 LTime=05:34 [Dewpoint] Low=5.4555492401123 LTime=05:34 High=11.6547174453735 HTime=09:03