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Board » Technical Support » Gain or loss by using TWA

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Posted by
Chappo


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2011-06-02 04:25:14 - Re: Gain or loss by using TWA
*8MR, I am not an IT guru but wouldn't these choices be made by the SOL server when you are looking at the forum and perhaps it is configures any large attachments that cannot physically be displayed in the message as attachments only.
Posted by
A2


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2009-10-26 00:39:42
2011-06-02 05:10:45 - Re: Gain or loss by using TWA
Nevermind I just found the BBCode link
None so blind
Posted by
AGage


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2011-06-02 08:16:54 - Re: Gain or loss by using TWA
Chappo said @ 2011-06-02 01:46:19:
I note you mentioned you have written a small tool that calculates both max VMG (for upwind & downwind) for a given TWS – , and also maximum VMC given input of TWS, TWD and a CC to the waypoint. Does it link to an uploaded polar or does it just require manual input based on different angles and BS from the polar at the time you choose to do a calc. Is that tool available for download somewhere? I use my simple worksheet attached for my max VMC calcs. I find it pretty good downwind, can be misleading upwind.
=======================
I have not completed it satisfactorily for publishing yet - actually barely usable within a race - although a few of its tools are complete and usable - kinda got side tracked when i started helping the SOL development team ;-)
It requires you to login to a sol race, so gets the polar data from there - also you can set it to automatically use your current wind from SOL, so its just a button push.
Actually this 'module' that computes vmc is one of the few that is completed and you can specify either 'WP' for the next course waypoint, a CC - target direction, or a lat/lon (in decimal degrees) target location. WP or lat/lon are the most useful I think, especially if you are so attentive as to adjust course frequently after re-computing.

While I am working on a few things for the sol client, they are just ideas atm and I don't intend to implement them with any haste, so hopefully I can have time to get this toolkit out the door... soon!
All of the base code that grabs the race and boat data from SOL was written well prior to me joining the dev team, so I don't see a 'conflict' when I release this, as I spent hours in a web debugger and pulling apart data packets to discover how to do it - so it doesn't rely on any 'internal sol knowledge' to work.
Actually there is nothing anyone with a little knowledge and time cannot discover about how SOL works - all its data is just XML, using standard HTTP GET and POST messages.

Tthis module also computes max BS twa to, which I have found use for on occasion in the long IMOCA legs... often it is obvious from the polar diagram within the SOL client, especially now it can be enlarged, but was also just one of those things that "its 6 lines of code, and why not include it?" ;-)

Perhaps rather than trying to get a whole set of tools out at once I should release a subset like this vmg/vmc calculator...
If I had access to a website to deploy to I would like to write some tools as a flash app that everyone can use within a browser. But a few visual tools rely on OS functionality so they wouldn't be possible (like the butterfly overlay)

All I can say regarding availability is "soon" and "keep an eye out on my sol tools blog :-)

_________________
Edited to reduce line so that column did not overlap :-D

--- Last Edited by RainbowChaser at 2011-06-03 18:31:09 ---
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by
Chappo


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2011-06-02 11:00:39 - Re: Gain or loss by using TWA
How do you find time for work Aaron, you have been very busy creating tools, updating your blog, being very competitive in SOL and now working on SOL development! That sounds like a very flash tool you are working on so I will keep an eye on your blog. Thanks for your great work.
Posted by
Schakel


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2011-06-02 14:02:12 - Re: Gain or loss by using TWA
Chappo said @ 2011-06-02 11:00:39:
How do you find time for work Aaron, you have been very busy creating tools, updating your blog, being very competitive in SOL and now working on SOL development! That sounds like a very flash tool you are working on so I will keep an eye on your blog. Thanks for your great work.
Some say he doesn't eat or sleep and only rolls his own. All we know is, he's called the Gage.

Cheers,
Philip
Posted by
A2


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2011-06-02 16:26:51 - Re: Gain or loss by using TWA
None so blind
Posted by
AGage


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2011-06-03 07:18:41 - Re: Gain or loss by using TWA
LOL Shackel - now I just need to get my lap times as consistent as his ;-)
I help develop the client interface for the best online ocean racing sim there is... __/)/)_/)__
Posted by
WhyNot


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2011-06-15 16:49:56 - Re: Gain or loss by using TWA
Schakel: Well chosen!

This is my desktop at the moment.

Tom

--------
edited to shorten the url to a link to reduce column widening!

--- Last Edited by RainbowChaser at 2011-06-16 16:33:43 ---
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