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SL Wind |
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EF Klaar
Registered User
Join date: 11 Jun 2007
Posts: 330
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08-19-2009 06:56
Does anyone know what the maximum wind speed is in SL? And does anyone have any idea what the wind speed distribution curve is like?
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Lee Ponzu
What Would Steve Do?
Join date: 28 Jun 2006
Posts: 1,770
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08-19-2009 13:27
It should be fairly simple to create a script that samples the wind for a few days, and then dumps the data, or the mean and std deviation.
Is that what you need? IM me in world and I will make you something basic... _____________________
So many monkeys, so little Shakespeare.
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23rdDjin Negulesco
Unfinished Build Master
Join date: 30 May 2007
Posts: 661
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08-19-2009 13:41
(that would definitely be easier than using the freebie windsock that has the readout above it, then having to stare at it for hours to collate the data...)
jus' sayin' _____________________
"What am I in the eyes of most people--a nonentity, an eccentric, or an unpleasant person--somebody who has no position in society and will never have; in short, the lowest of the low. All right, then--even if that were absolutely true, then I should one day like to show by my work what such an eccentric, such a nobody, has in his heart." -Vincent van Gogh
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Nyoko Salome
kittytailmeowmeow
Join date: 18 Jul 2005
Posts: 1,378
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:0
08-19-2009 14:39
my last recorded max windspeed: 28.8 meters per second!!
i'd left my little 'weathermeter' toy alone for a loooonnng long time... fortunately seems like it hasn't crashed since i last touched it (and i can't remember when that was, maybe a year ago now ;0) _____________________
 Nyoko's Bodyoils @ Nyoko's Wears http://slurl.com/secondlife/Centaur/126/251/734/ http://home.comcast.net/~nyoko.salome2/nyokosWears/index.html "i don't spend nearly enough time on the holodeck. i should go there more often and relax." - deanna troi |
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Void Singer
Int vSelf = Sing(void);
Join date: 24 Sep 2005
Posts: 6,973
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08-20-2009 11:14
not really helpful but...
https://wiki.secondlife.com/wiki/Category:LSL_Weather _____________________
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EF Klaar
Registered User
Join date: 11 Jun 2007
Posts: 330
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08-20-2009 12:40
To answer my own question (in case anyone is interested), this is what I got after about 10 hours of taking a windspeed reading every second (using llVecMag (llWind (ZERO_VECTOR))):
36864 samples taken: [12:10] Wind speed monitor: 0 - 1: 1999 [12:10] Wind speed monitor: 1 - 2: 6495 [12:10] Wind speed monitor: 2 - 3: 8927 [12:10] Wind speed monitor: 3 - 4: 7133 [12:10] Wind speed monitor: 4 - 5: 5095 [12:10] Wind speed monitor: 5 - 6: 2867 [12:10] Wind speed monitor: 6 - 7: 1708 [12:10] Wind speed monitor: 7 - 8: 1188 [12:10] Wind speed monitor: 8 - 9: 543 [12:10] Wind speed monitor: 9 - 10: 330 [12:10] Wind speed monitor: 10 - 11: 187 [12:10] Wind speed monitor: 11 - 12: 128 [12:10] Wind speed monitor: 12 - 13: 140 [12:10] Wind speed monitor: 13 - 14: 44 [12:10] Wind speed monitor: 14 - 15: 15 [12:10] Wind speed monitor: 15 - 16: 16 [12:10] Wind speed monitor: 16 - 17: 21 [12:10] Wind speed monitor: 17 - 18: 10 [12:10] Wind speed monitor: 18 - 19: 12 [12:10] Wind speed monitor: 19 - 20: 6 No speed over 20 m/s was recorded in that time, though such speeds clearly do occur. The reults look pretty straightforward, and don't even need a bar chart to speak for themselves. I guess the maximum possible speed will remain a mystery unless someone familiar with the server code stumbles across this thread. |
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Meade Paravane
Hedgehog
Join date: 21 Nov 2006
Posts: 4,845
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08-20-2009 12:54
Didn't there used to be a resident SL meterologist?
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Nyoko Salome
kittytailmeowmeow
Join date: 18 Jul 2005
Posts: 1,378
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08-20-2009 13:09
No speed over 20 m/s was recorded in that time, though such speeds clearly do occur :0 i wonder if they haven't changed some weather dynamics over sim upgrades over time. as i remember it when i more used to toy around with my weather gauge, it seemed like windspeeds close to/over 20 m/s was semi-frequent (as in, i could stand there working on script versions and see it constantly happening in front of me over the course of an hour or two)... lol maybe a 'virtual la nino' at the time. ;0 p.s. gosh my last local filesave on my windgauge was dec 07!! maybe i resaved it ingrid as mono meantime, but it sure has been a long time since i reset it, and it hasn't frozen up meantime (otherwise i wouldn'ta been able to touch on the display). so 28.8 would be my official 'max windspeed' at least for the centaur sim... ;0 south-pacific grid though!!  _____________________
Nyoko's Bodyoils @ Nyoko's Wears http://slurl.com/secondlife/Centaur/126/251/734/ http://home.comcast.net/~nyoko.salome2/nyokosWears/index.html "i don't spend nearly enough time on the holodeck. i should go there more often and relax." - deanna troi |
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EF Klaar
Registered User
Join date: 11 Jun 2007
Posts: 330
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08-20-2009 13:24
:0 i wonder if they haven't changed some weather dynamics over sim upgrades over time |
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Lee Ponzu
What Would Steve Do?
Join date: 28 Jun 2006
Posts: 1,770
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08-20-2009 13:48
There will always be a larger flood...
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So many monkeys, so little Shakespeare.
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Osprey Therian
I want capslocklock
Join date: 6 Jul 2004
Posts: 5,049
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08-20-2009 14:26
Just adding in case some people need the information - there's a wind display in debug under HUD Info.
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Cid Jacobs
Theoretical Meteorologist
Join date: 18 Jul 2004
Posts: 4,304
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08-22-2009 17:30
Didn't there used to be a resident SL meterologist? *stumbles into the thread* * Fastest Wind Speed: 31.800045 meters per second at Neualtenburg on 6/6/06 * Slowest Wind Speed: 0.000440 meters per second at Neualtenburg on 6/8/06 Those are my records. As for how it works... "The wind is based on the 2D stable fluid method described in Jos Stam's article in the Siggraph 1999 proceedings. Each region is its own incompressible simulation but it trades boundary conditions with its neighbors so it is possible for one region to affect another. The consequence of this is that the largest coherent vortex that the wind can form is on the scale of a single region, however wind flowing out of one region will push that in the other so some wind structures are larger than a single sim. It has some pseudo stable chaos magic injected that keeps it boiling, and the chaos is scaled by the sun position so that the ambient activity varies on a daily schedule. I think there is a small offset that causes the global wind average to point away from the sun around sunrise and sunset, however it has been a long time since I've looked at that code." - Andrew Linden http://www.multires.caltech.edu/teaching/demos/java/stablefluids.htm |
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Jesse Barnett
500,000 scoville units
Join date: 21 May 2006
Posts: 4,160
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08-22-2009 17:40
*incomprehensible words* Yep, exactly the way I thought it worked  _____________________
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