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Board » Technical Support » Getting TWA and TWS of "friends" boats.

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Posted by
jf44


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2009-06-19 08:26:04
2017-02-28 07:18:45 - Re: Getting TWA and TWS of "friends" boats.
My soft is ready (beta version)

BTW I have found strange COG values :
<cog>0.798365726218</cog>

I think this is a radian value. Is'nt ?

All the boats are going south this night on NSSANZ; I get :
<cog>3.17281659391</cog>
After conversion
COG radian: 3.17281659391
COG degree: 171.88733853925
The right direction.

I have not yet implemented TWA / TWS nor the sail selection.

I have seen where DC Checker gets polars and gribs .
Some more tests and I'll publish the beta version on my server.


Jean.
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Posted by
jf44


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2009-06-19 08:26:04
2017-02-28 19:55:33 - Re: Getting TWA and TWS of "friends" boats.
The english (and french) beta versions are here: http://voilevirtuelle.free.fr/SailOnLine/ge/

BUT... the Free.fr server does'nt allow to retrive data from an another server so you can't use directly these scripts.

You have to download them and set up your own local webserver.

If Solfan web site (or Kroppyer's one) could hosts this code (after extensive testing and maybe few improvements, any SOLers could directly generate and download his own KML / KMZ map of the Sol fleet.

Sources: http://voilevirtuelle.free.fr/SailOnLine/ge/sol2kml.zip
Images: http://voilevirtuelle.free.fr/SailOnLine/ge/images/

KML/KMZ: http://voilevirtuelle.free.fr/SailOnLine/ge/index.php#kmz



Jean.

--- Dernière modification par jf44 le 2017-03-01 01:57:29 ---
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Posted by
kroppyer


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2010-02-05 15:25:55
2017-03-01 01:28:24 - Re: Getting TWA and TWS of "friends" boats.
looking good!
I would recommend using the sol account to retrieve data, then signing in can be done automatically. 

"http"."://www.sailonline.org/webclient/
authenticate.xml?username=".$nick.";
password=".$pass.";race_id=".$race

use $nick="sol" and $pass="sol".

And this will list names and IDs (and more) of active races: 
"http"."://www.sailonline.org/webclient/
races.xml?filter=active"


--- Last Edited by kroppyer at 2017-03-01 01:29:13 ---
Posted by
jf44


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Registered at
2009-06-19 08:26:04
2017-03-01 04:02:08 - Re: Getting TWA and TWS of "friends" boats.
OK.

I have made the modification :

--- Implemented ----
1) Get the list of active races

2) The user select one

3) Login with "sol" account
-> return a valid token

4) Get the boat list and position
-> conversion to KML / KMZ map

5) Archive : List of all KMZ files sorted by race and date.

6) the TWA set up the type of sail :
TWA <= 40° -> Jib
40° <= TWA < 110° -> Genois
110° < TWA <= 140° -> Gennaker
140° < TWA -> Spinnaker

7) TWA & TWS act on boat roll : more wind, more roll

8) And last but not least, added new collada files for trimaran

--- Implemented ----


Future improvements

9) Select which boats to display


Attached zip: The updated version of 2017/03/25.
Correction of fews bugs and many improvements like new models, Grib, Polars and tour.




--- Dernière modification par jf44 le 2017-03-15 01:53:53 ---

--- Dernière modification par jf44 le 2017-03-28 22:59:25 ---

--- Dernière modification par jf44 le 2017-03-29 00:28:30 ---
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Posted by
jf44


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Posts
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Registered at
2009-06-19 08:26:04
2017-03-09 11:18:52 - Re: Getting TWA and TWS of "friends" boats.
Hi everybody (and Koppyer / Kipper of course)
I need clarification about grib restitution for SOL.
1) Are the U and V components of Grib files from DCChecker's SOLGribXml folder in m/s or in knots ?
I think they are in m/s.

2) The U and V values are the TWS components, with U the vertical component and V the horizontal one
like in the Sol'd blog
https://daysailer.wordpress.com/2011/02/20/how-to-calculate-tws-and-twd-from-grib-components/

That's right ?


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