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To find out what is allowed for '''tag_name''', see the various tables later on this page. | To find out what is allowed for '''tag_name''', see the various tables later on this page. | ||
To find out what is allowed for the input selection parameters and output modification parameters, refer to [[ | To find out what is allowed for the '''input selection parameters''' and '''output modification parameters''', refer to [[Webtags/Parameters|web tag parameters]] page. | ||
==What this page covers == | ==What this page covers == | ||
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==Recent History== | ==Recent History== | ||
There are a set of web tags for 'recent historical data', based on an array stored by Cumulus giving data values from 1 minute ago, up to 1 week ago, in 1 minute intervals. As Cumulus runs it will add the latest values to the array with full resolution, and shift existing values along so those older than 7 days fall off. | There are a set of web tags for 'recent historical data', based on an array stored by Cumulus giving data values from 1 minute ago, up to 1 week ago, in 1 minute intervals. As Cumulus runs it will add the latest values to the array with full resolution, and shift existing values along so those older than 7 days fall off. | ||
*The input modification parameters available are listed at [[Webtags/Parameters#Input Modification Parameters for Recent History]]. | |||
**To save you looking up the details, these input parameters specify how many minutes ago is required. Instead of entering a very large number for minutes, you can include separate input parameters for days, hours, and minutes, ago. | |||
**Examples appear in the table below, with explanations | |||
Following the table giving the tag names actually available, there is a section on how to derive a few more weather derivatives using a combination of the tag names shown. | |||
=== | ===Warning when Daylight Saving Time starts or ends=== | ||
Note that Cumulus uses current time, read from the computer, to determine which array element it stores each value in. | |||
Hence ''when clocks go back'' the value stored for winter time overwrites the value previously stored for same time during summer time for the relevant repeating hour. | |||
Hence even if you use 10am for your rollover time in summer, you will not have access to a whole hour worth of data when the clocks change | |||
* ''when the clocks go back'', one hour has been overwritten; or | |||
* ''when the clocks go forward'', one hour in the array simply does not exist. | |||
=== Table of Recent History web tags available === | |||
[[#No_Commas]] versions of the array are available for use in script. If you use MX, the tag names in this table can take a [[Webtags/Parameters#Output Modification Parameter for Removing Commas|rc=y]] parameter. | |||
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This table includes web tags that show the values in [[Monthlyalltime.ini]] log file, which was introduced in version 1.9.3 (build 1033, 10 Apr 2012). | This table includes web tags that show the values in [[Monthlyalltime.ini]] log file, which was introduced in version 1.9.3 (build 1033, 10 Apr 2012). | ||
These are a set of tags for monthly all-time highs and lows, in other words the highest and lowest values for a particular month of the year. To supply both optional input, and optional output parameters, separate them with spaces, e.g. <#ByMonthTempHT mon=7 format=hh:nn>. In that example, the highest ever temperature in July is returned in the value after processing by Cumulus | These are a set of tags for monthly all-time highs and lows, in other words the highest and lowest values for a particular month of the year. To supply both optional input modification, and optional output modification parameters, separate them with spaces, e.g. <#ByMonthTempHT mon=7 format=hh:nn>. In that example, the highest ever temperature in July is returned in the value after processing by Cumulus. | ||
For full details of the input modification parameters, see [[Webtags/Parameters#Input_modification_Parameters|Parameters]] page. | |||
Additional tags correctly populated from 3.6.10 (build 3086) or 3.7.0 (build 3089) are marked with a "MX" icon as they are not available in Cumulus 1. Please note the 3.6.10 release was available from 24 June 2020, if the date/time shown for those MX only tags is before when you installed that (or a later release), the feels like output may show incorrect values. | Additional tags correctly populated from 3.6.10 (build 3086) or 3.7.0 (build 3089) are marked with a "MX" icon as they are not available in Cumulus 1. Please note the 3.6.10 release was available from 24 June 2020, if the date/time shown for those MX only tags is before when you installed that (or a later release), the feels like output may show incorrect values. |
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