does #temptrend and Cumulus Mx show a negative trend?
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Latest Cumulus MX V4 release 4.4.2 (build 4085) - 12 March 2025
Latest Cumulus MX V3 release 3.28.6 (build 3283) - 21 March 2024
Legacy Cumulus 1 release 1.9.4 (build 1099) - 28 November 2014
(a patch is available for 1.9.4 build 1099 that extends the date range of drop-down menus to 2030)
Download the Software (Cumulus MX / Cumulus 1 and other related items) from the Wiki
If you are posting a new Topic about an error or if you need help PLEASE read this first viewtopic.php?p=164080#p164080
Temperature Trend
Moderator: mcrossley
-
water01
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- Operating System: Windows 10/11 64bit Synology NAS
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Temperature Trend
I am probably being thick but why if my temperature is rising

does #temptrend and Cumulus Mx show a negative trend?

does #temptrend and Cumulus Mx show a negative trend?
- steve
- Cumulus Author
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Re: Temperature Trend
Because it's based on the change since three hours ago, when your temperature was higher than it is now.
From the wiki:
<#temptrend> The average rate of change in temperature over the last three hours. Trend = (temp_now - temp_3hrs_ago) / 3
From the wiki:
<#temptrend> The average rate of change in temperature over the last three hours. Trend = (temp_now - temp_3hrs_ago) / 3
Steve
-
water01
- Posts: 3670
- Joined: Sat 13 Aug 2011 9:33 am
- Weather Station: Ecowitt HP2551
- Operating System: Windows 10/11 64bit Synology NAS
- Location: Burnham-on-Sea
- Contact:
Re: Temperature Trend
Thanks Steve, knew there would be a simple answer and note to self RTFM!!

- steve
- Cumulus Author
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- Joined: Mon 02 Jun 2008 6:49 pm
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Re: Temperature Trend
If you want a figure over a shorter period, there is <#TempChangeLastHour> and the standard index.htm web page uses that rather than <#temptrend>. but that isn't currently available via the web sockets interface for display on the UI dashboard.
Steve