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Today.ini: Difference between revisions
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Cumulus 1 has a [[Downloads#Resources|Help file]] that is part of the Cumulus 1 installation package; that provides a simple explanation for each file. | Cumulus 1 has a [[Downloads#Resources|Help file]] that is part of the Cumulus 1 installation package; that provides a simple explanation for each file. | ||
David Jamieson created this Wiki page on 27 August 2009, to cover "today.ini" and "yesterday.ini" files. His introductory text simply stated these files were for tracking extremes in the two days and new files were created at 9am or midnight rollover). David also included a listing of | David Jamieson created this Wiki page on 27 August 2009, to cover "today.ini" and "yesterday.ini" files. His introductory text simply stated these files were for tracking extremes in the two days and new files were created at 9am or midnight rollover). David also included a listing of a typical "today.ini" file. | ||
Since the initial creation of the Wiki, it has attempted to become reference documentation that answers questions that arise frequently in the support forum. This does mean its pages have become harder to read, and thus there is now an attempt to split "essential" facts that give a basic understanding (as in following subsections) from "technical" facts (later on this page with more complex instructions on how to cope with problems). | |||
Therefore for a quick read, stop after this essential section or use the page index above to skip quickly to whatever is of interest to you. | Therefore for a quick read, stop after this essential section or use the page index above to skip quickly to whatever is of interest to you. | ||
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=Non-essential information= | =Non-essential more technical information= | ||
You can skip the following subsections unless you have a particular need to read them. | You can skip the following subsections unless you have a particular need to read them. | ||
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#If you change a temperature source extreme (i.e. highest/lowest temperature) you should also be taking the old value out of 'Total' line and decreasing by one the'Samples' count | #If you change a temperature source extreme (i.e. highest/lowest temperature) you should also be taking the old value out of 'Total' line and decreasing by one the'Samples' count | ||
# You cannot work out from any change in a temperature source extreme (i.e.. highest/lowest temperature) how to change the related derived extremes (e.g. wind chill, apparent temperature, feels like, dew point). Each derived value is worked out by combining spot values at a particular time, so you have to recalculate as many spot derived values as possible in order to work out the new derived extreme. | # You cannot work out from any change in a temperature source extreme (i.e.. highest/lowest temperature) how to change the related derived extremes (e.g. wind chill, apparent temperature, feels like, dew point). Each derived value is worked out by combining spot values at a particular time, so you have to recalculate as many spot derived values as possible in order to work out the new derived extreme. | ||
==== Editing Chill Hours==== | |||
Prior to release 3.12.0, the web template "thisyearT.htm" included a single cumulative figure for [[Heat/cold_degree_days_and_Chill_hours#Calculation_of_Chill_Hours|seasonal chill hours]], and that figure was taken from the chill hours figure stored in "today.ini". A lot of processing was needed to calculate this figure so, in these earlier releases, it was unusual for anyone to correct any rogue figure. | |||
From release 3.12.0 onwards, yesterday's cumulative total is stored in "yesterday.ini". Once you have corrected any rogue maximum or minimum temperature, you can look at the outdoor temperature reported in every row in [[Cumulusmx.db]] since last rollover. For each figure that is below your chosen threshold temperature, add the fraction 1/60 (assuming interval between rows is one minute). The cumulative totals of those fractional increments are added to obtain the figure that should be in today.ini. Unless today is the first day of the month set as first month of season, add on the figure stored in yesterday.ini, to get value to put in today.ini. | |||
==== Edits related to humidity or wind speed ==== | ==== Edits related to humidity or wind speed ==== | ||
