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Author Topic: Windchill and Heat Index transposed? (RESOLVED)  (Read 1224 times)

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Offline bitsostring

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Windchill and Heat Index transposed? (RESOLVED)
« on: July 13, 2018, 06:34:43 PM »
Installed SteelSeries Gauges today, getting data from WD via customclientraw.txt. Problem appears to be that Windchill and Heat Index displayed do not agree with WD values in clientraw.txt: the values appear to be transposed.

I have no idea what customclientraw values are, only that those shown on the gauges do not agree with WDLive or FreshWDL. Here, read a few seconds apart, is what I see:

Gauges temp 19.1, hum 87%, windchill 20.6, heat index 19.1, humidex 24.5

clientraw temp 19.2, hum 87%, windchill 19.2, heat index 20.9, humidex 24.5

Leaving aside the question of whether windchill is valid at these temps and windspeeds, I do have it set to "Use the new windchill formula" and to be calculated for temps above 10C, including clientraw. I don't ever expect it to be higher than temp.
« Last Edit: August 12, 2018, 02:51:00 PM by bitsostring »
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Offline bitsostring

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Re: Windchill?
« Reply #1 on: July 17, 2018, 01:25:09 PM »
I have no idea what customclientraw values are, only that those shown on the gauges do not agree with WDLive or FreshWDL. Here, read a few seconds apart, is what I see:

Gauges temp 19.1, hum 87%, windchill 20.6, heat index 19.1, humidex 24.5

clientraw temp 19.2, hum 87%, windchill 19.2, heat index 20.9, humidex 24.5

Did a bit more digging: clientraw and customclientraw are only uploaded every 30 secs, so I opened a copy of each within a few seconds and found:

clientraw temp 16.2, windchill 16.2, heat index 16.2, apparent 16.2, humidex 18.1

custom temp 16.2, windchill 17.1, heat index 16.2, apparent 16.2, humidex 18.1

I also glanced at the gauges and saw temp 16.2, windchill 17.1 and heat index 16.2 before the customclientraw refresh. So how is customclientraw (using %windch%) showing a different value of windchill to clientraw?

I also note that there is no "wchillTH":"%maxwindchill%" in customclientraw, so the pop-up doesn't show max and min values.

« Last Edit: July 17, 2018, 01:52:44 PM by bitsostring »
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Offline mcrossley

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Re: Windchill?
« Reply #2 on: July 17, 2018, 04:46:04 PM »
So how is customclientraw (using %windch%) showing a different value of windchill to clientraw?
A question for Brian I think!
Mark

Offline bitsostring

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Re: Windchill?
« Reply #3 on: July 17, 2018, 04:56:44 PM »
A question for Brian I think!

Thanks, Mark, I was beginning to think that, too! I just jumped onto this board as soon as I noticed the anomaly on the gauges.
« Last Edit: July 17, 2018, 06:24:18 PM by bitsostring »
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Offline niko

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Re: Windchill and Heat Index transposed?
« Reply #4 on: July 17, 2018, 05:22:16 PM »
I wonder if you have one of the temperature substitution options set in WD? I'm thinking of areas like the humidex substitution on Control Panel/Units/Temperature setup.

Offline bitsostring

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Re: Windchill and Heat Index transposed?
« Reply #5 on: July 17, 2018, 05:49:54 PM »
I wonder if you have one of the temperature substitution options set in WD? I'm thinking of areas like the humidex substitution on Control Panel/Units/Temperature setup.

Nothing obvious like that but, although I am aware that sometimes options can be set or modified in different places, I have never been interested in artificial indexes so it is unlikely. Anyway, windchill appears to be shown OK in clientraw: it's just plain wrong in customclientraw.

Still wondering about the setting I mentioned above: "Use the new windchill formula". Is customclientraw picking up on the old formula?

Think my comment about max windchill may be explained if %maxwindchill% was unavailable when customclientrawlocal was first designed. If it had been available it would surely be %maxwindch% to be consistent with %windch% and
%minwindch%.
« Last Edit: July 17, 2018, 06:26:01 PM by bitsostring »
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Offline niko

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Re: Windchill and Heat Index transposed?
« Reply #6 on: July 17, 2018, 05:59:42 PM »
No, as we discussed, windchill can't be higher than ambient.

Offline mcrossley

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Re: Windchill and Heat Index transposed?
« Reply #7 on: July 17, 2018, 06:04:26 PM »
The gauges use data that is - broadly - available across a range of software, some offer more or different data than others. The max value doesn't mean much as it will equal the max temp much of the time, most people are interested in how low the chill went.
Mark

Offline bitsostring

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Re: Windchill and Heat Index transposed?
« Reply #8 on: July 17, 2018, 06:07:45 PM »
most people are interested in how low the chill went.

Agreed!
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Offline Weather Display

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Re: Windchill and Heat Index transposed?
« Reply #9 on: July 18, 2018, 10:14:00 AM »
the next update of WD will have the code in place to check if the resulting windchill was higher than the temperature (and so its set as the temperature)
that 1 line of code was missing from the tag code

Offline bitsostring

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Re: Windchill and Heat Index transposed?
« Reply #10 on: July 18, 2018, 10:19:00 AM »
Thanks, Brian!
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Offline monadh

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Re: Windchill and Heat Index transposed?
« Reply #11 on: July 19, 2018, 11:16:34 AM »
I have the same problem, Wind Chill is higher than Ambient.
Have updated WD to build 74 and problem is still there on both my sites.
See here:-  http://monadh.com/nbwcl.php

Offline Weather Display

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Re: Windchill and Heat Index transposed?
« Reply #12 on: July 19, 2018, 07:23:07 PM »
I just checked your site
and I do not see that issue for the left hand one

Offline monadh

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Re: Windchill and Heat Index transposed?
« Reply #13 on: July 19, 2018, 07:57:48 PM »
Brian,
I agree the left one is not currently showing the problem, but it was earlier when i posted the comment. #-o
I have checked and both sites are set up identically.
Any ideas?
Regards
Ray

Offline Weather Display

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Re: Windchill and Heat Index transposed?
« Reply #14 on: July 19, 2018, 08:34:15 PM »
is the right hand one using build 74?

 

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