Strange 1st dot heading
Post by iconPost by jim | 2020-12-14 | 14:00:27

Hi Cvetan,
Since some minutes ago, the 1st dot is similar in TWD and TWA to next dots, but the heading
(BTW) of the 1st dot is very different from the next ones (heading/BTW of the 1st dot=145° vs around 90° for the following dots) whithout obvious reasons.
Best regards

commenticon 2 Comments
Post by iconPost by zezo | 2020-12-14 | 14:21:31
It suggests you make two gybes. But you know better ;-)

Because the router is not aware of you current heading, it can not caclculate the actual gybe penalty. That would be reasonable suggestion if you were actually sailing at 150, but you are not.

This problem always exists when sailing up/downwind. The router does not have history of your maneuvers, output is based only on your current position. So better call it once and apply the resulting track during the following few hours (or note the average leg length). The calculation is pretty usable. Not perfect, but should be ok.

This is not an issue if the conditions are really changing, like a wind shift around you. But in regular wind field you will get different initial tack every 10 minutes for pure geometrical reasons. It's also the reason it had small tack penalty even before the game got one - it would tend to change direction every 10 minutes (or whatever the time step is)

Post by iconPost by jim | 2020-12-14 | 18:45:23
As the TWA was the same between the various lines, I didn't notice its color change from red to green (in the zezo route) from the 1st to the next lines. So sorry. Best regards.
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All.grib 0.0k ?
9
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different speed
3
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Strange 0.5 mille VR Scale
3
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Just an idea for a new feature...
7
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Connexion impossible
1
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Donations
7
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New leader - seems to be using Zezo
38
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Bravo Zezo
4
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zezo : Huge job - Huge thx
2
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Difference between boat speed display on VR, dashboard and polar curves
7
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Vendée Globe: Track lines falling too short of ischrones
8
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Tara Ocean
29
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VR winds currently not up to date ?
1
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"Sails Change" within the Programming
3
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RORC Transat finish moved to Antigua
3
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Weather update not appearing...
19
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Dashboard not updating.
6
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Boats Skins Vendée Globe
3
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Safari on iOS: Bearing lines gone
3
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Wrong coordinates in zezo
2
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Winds in the chart do not show changes between 78 hours and 114 hours forecast
2
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Decoding of All grib
6
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I CANNOT ENTER FOR 3 HOURS IN THE GAME
23
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Why the vc data is yellow underlined ?
3
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Jules Verne 2020 - "Start NOW" discrepancy VS real time
7
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Would like to know the reasenable time to update your pisition on zezo
16
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Arrival Vendée Globe in Normandy !!?
4
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MIssing the Obvious: How to get Zezo routes back into VR
2
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VG 2020-01-02 has Zezo a problem with geographic or ...
8
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How to retrieve a waypoint (TWA/HDG) that already passed...
16
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Track duration window
3
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Ways to bypass the client to give orders?
6
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Problem to Load zero route in windy.com
40
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French tutorial for zezo
4
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boat positioning
2
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Export routes in GPX format ?
4
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Sail selection issue ?
11
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Your friends boats in Google Earth
2
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Delay in Wind update ?N
1
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VR Dashboard
54
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Colone Tile red
3
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Destination setting - Fixer la destination
2
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Anyone else experiencing erratic course changing behavior?
9
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Looks like game winds not updating.
6
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difference between wind on he map and wind on the route
8
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Cape Horn route is not possible it is crossing land
6
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Lost the lines..
2
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all.grb question
3
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2 routings ?
1
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What point or line is being used to determine the rankings?
61
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180 degree bug and downwind track
11
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démarrer avec zezo au milieu de la course
2
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Local times in the charts
1
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red and green lines ahead of isochrones
13
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20 Minute tack
6
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nemo point challenge problem
8
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Nemo Point Challenge
51
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Point Nemoers
1
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Route doesn't give prediction over 24h anymore
7
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Iterations on server & Zezo
5
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Sidney-Hobart 2020
3
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To day zezo don’t give me any route
6
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Fatal Grib error tonight ?
2
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predicted times JV
3
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Loick Peyron uses zezo, the best virtual sailing router ;)
9
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Orthodromy vs loxodromy around the poles
6
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Strange 1st dot heading
3
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Campbell Island
4
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VR bugs and rants
11
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Cap constant, ou angle au vent ? Constant heading, or wind angle?
18
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Colors of wind in the chart
4
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