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nohal · 28-01-2018, 03:41

Quote:

Originally Posted by SFH

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1. Weather route is stored as a track but when trying to convert it from track to route for upload to my plotter OpenCPN stalls

Can you please export the track that makes the program stall as GPX and attach it here?

Thanks

Pavel

SFH · 28-01-2018, 04:07

Quote:

Originally Posted by nohal

Can you please export the track that makes the program stall as GPX and attach it here?

Thanks

Pavel

Hi Pavel

Here you go

nohal · 28-01-2018, 05:00

Quote:

Originally Posted by SFH

Hi Pavel

Here you go

Hmmm...
Can't reproduce, converts to route just fine here (But I am running the very latest code to become OpenCPN 4.8.2 here).

Pavel

SFH · 28-01-2018, 05:06

Quote:

Originally Posted by nohal

Hmmm...
Can't reproduce, converts to route just fine here (But I am running the very latest code to become OpenCPN 4.8.2 here).

Pavel

Ok. Still on latest released Beta. Will wait for 4.8.2

nohal · 28-01-2018, 05:09

Quote:

Originally Posted by SFH

Ok. Still on latest released Beta. Will wait for 4.8.2

Well, there is nothing between the latest beta and what I run now that should have a direct potential to fix this, unfortunately. Your OS is Windows, right? I will try to do some more tests later.

SFH · 28-01-2018, 05:22

Quote:

Originally Posted by nohal

Well, there is nothing between the latest beta and what I run now that should have a direct potential to fix this, unfortunately. Your OS is Windows, right? I will try to do some more tests later.

Yes. Running Windows 10 and 4.8.10125

rgleason · 28-01-2018, 13:04

Quote:

Originally Posted by SFH

I have previously had problems getting this plugin working properly but doing a clean install as suggested in a previous post and using latest version of Climatology and weather routing makes it works flawless for planning the routing

Very glad to hear this. Thanks for the feedback, Sean, Stelian and I worked hard to get this so it would work out of the box.

Quote:

A few things not working entirely in OpenCPN or that could be improved
1. Weather route is stored as a track but when trying to convert it from track to route for upload to my plotter OpenCPN stalls

Perhaps try to export the track then import it back in. How many points does the track have? Would it help to simplify the number of points perhaps? (You can do this in the program.)

Quote:

2. It is a great feature to see the % upwind sailing. I am not a programmer but maybe this function could be used for scenario planning.

Lets say that the plugin could run a scenario for every six hours for the period for which there are available GRIB data and then it could propose the route with the least upwind % - maybe even combined with the shortest route/passage time. The admiral on our boat would really appreciate this :-)

It can of course be done manually..

You can run "Configurations" that start every six hours all at once (multithreads supported) Then you can highlight all six routes and step through them, with a new configuration starting every six hours.
What we can't do so easily is compare each of the "calculations" in tabular format to see the differences. (Similar to Grib Table). This would be a nice addition sometime if someone wants to make a PR I am sure Sean will consider it.

Taarnskov · 28-01-2018, 16:21

Hi all,

I am very happy that wind Gust is now part of the table in weather routing, but there must be a mistake if you look at the enclosed picture.

Regards, Lars

seandepagnier · 28-01-2018, 18:06

Quote:

Originally Posted by Taarnskov

Hi all,

I am very happy that wind Gust is now part of the table in weather routing, but there must be a mistake if you look at the enclosed picture.

Regards, Lars

The wind gust is based on grib wind gust. This is wind gust over land, and there is no vector.

The wind is based on wind over water. So with strong currents it's possible to get what you see.

Otherwise, maybe a bug, I don't know without more information.

Taarnskov · 28-01-2018, 22:26

Hi Sean,

I made this route without a current grib, and there is no data in the grib where the gust value is lower than the average value. What kind of futer information do you need.

Regards Lars

did-g · 29-01-2018, 07:09

Hi
How do I deal with :

In 15 kn wind I can motor at 6 kn upwind which is better than I can sail but not much. cf Images

I try to play with overlap but without result.

Note:
I'm using boundaries created from vector charts (2m depth contour, isolated dangers in safe water) and gribs good enough for that kind of routing being realist.

What's missing is some kind of 'time to impact' test on:
- grounding at this heading.
- grounding if drifting (need a drifting polar with negative speed?).

ie computed Toulinguet route is ok, no way for Pointe du Raz later.

Moreover if we add tide level with 0m depth contour WR could route through 'Trouz Yar"; current data are good enough for it!

seandepagnier · 29-01-2018, 07:19

Quote:

Originally Posted by Taarnskov

Hi Sean,

I made this route without a current grib, and there is no data in the grib where the gust value is lower than the average value. What kind of futer information do you need.

Regards Lars

Let me see the grib, and the weatherroutingconfiguration.xml. Maybe there is a bug, it's a new feature.

rgleason · 29-01-2018, 09:32

Did-g

Quote:

In 15 kn wind I can motor at 6 kn upwind which is better than I can sail but not much. cf Images

Sean would prefer that sailors use their sails rather than internal combustion engines, so he does not want sailors using Power-Boat polars for routing. However in the interest of saving fuel and reducing emissions, I believe weather_routing could be very useful in planning safe and effective power boat voyages. However this is not the primary purpose of weather_routing.

To conform in some way, to Sean's wishes I will not explain how to make a powerboat polar.