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Board » Technical Support » Problem with BW on Christmas race

Posted by
Joshua_Pig


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2009-09-25 16:58:15
2010-12-06 09:44:04 - Problem with BW on Christmas race
Hi everybody !

When I try to calculate a route on BW, I have a message error saying "unable to reach end point"

After checking with Jeff, it seems that the grib file I get from Brain's site is the cause of the problem, for exemple BW works fine with a grib file from Ugrib.

Is someone else experiencing the same ?

Thanks
Josh
Posted by
Schakel


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2008-12-19 09:19:00
2010-12-06 09:59:09 - Re: Problem with BW on Christmas race
The grib file from brainaid's site contains data for both sides of the dateline. Open the grib manager with the grib file loaded. You'll see that the grib file in the treeview contains 2 wind nodes. Select the upper one and uncheck the "Use for routing" option.

--
HTH, HAND,
Philip
Posted by
76Trombones


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2009-08-03 18:04:56
2010-12-06 12:51:17 - Re: Problem with BW on Christmas race
Also it only extends 7 days. Not sure how BW handles this, but even if the software guesses the wind outside of the window (usually just freezing the last forecast) you sometimes get pretty crazy solutions.
Posted by
ita10267


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2008-12-29 10:33:09
2010-12-06 12:57:02 - Re: Problem with BW on Christmas race
extending the last forecast is a paved road to self elimination....
Posted by
kalle


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2010-12-06 12:59:55 - Re: Problem with BW on Christmas race
Which is why Sailplanner displays the route calulculated outside the current window in red instead of the normal blue ;)
Posted by
Joshua_Pig


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2010-12-06 13:08:56 - Re: Problem with BW on Christmas race
Thank you guys, it works fine now.

I didn't know that the message error concerned the grib file until this morning, but it was not the first time I had this problem, I shall know for the future.

76, BW is dealing with grib files in a pretty way, as I have now added a grib for 14 days without more problem !

Cheers
Posted by
76Trombones


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2010-12-06 13:13:03 - Re: Problem with BW on Christmas race
ita10267 said @ 2010-12-06 12:57:02:
extending the last forecast is a paved road to self elimination....
hehe yes... "sometimes" really should read "always" ;-) GIGO
Posted by
Joshua_Pig


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2009-09-25 16:58:15
2010-12-06 13:33:01 - Re: Problem with BW on Christmas race
It may be right in most cases, but for this race, if we except the possibility to pass above New Guinea, a grib at 7 or 14 days should not make any difference right now...

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