Weather Routing

[Gilletarom]

Hello,

Originally Posted by rgleason

The only improvement that I know of that is not included is the Slow start and finish. I have a copy of it and tried it, but I could not seem to find out where to turn it on! Do you know where those settings are?
Thanks.

Who proposed this evolution? If it's did-g, ask him.

[rgleason]

I did and he's busy
https://github.com/seandepagnier/wea...uting_pi/pulls


Discussion
https://github.com/seandepagnier/wea...ng_pi/pull/205

[HUR450502]

Hi Rick, just a short question - you received my e-mail? You have my e-mail address? Just to make sure, ok??


Best regards, Uwe

[rgleason]

I tried it and it seemed to bounce. Can you send to me? Thanks.

Originally Posted by HUR450502

Hi Rick, just a short question - you received my e-mail? You have my e-mail address? Just to make sure, ok??


Best regards, Uwe

[registry]

Hi,



how can i include tidal gribs into the route calculation next to the weather grib files?



Here ftp://ftp.bsh.de/Stroemungsvorhersagen/ eg. i cna get tidal predictions... and would like to use them in the WR... is it possible?



Cheers,
Registry

[Gilletarom]

Hello Registry
Which country are you from? This is an important question to answer your own question.

if you are European, comme je le pense, it is preferable to load grib files containing also the current data, rather than wanting to use current tables as those that can be produced by Hydrographic Offices such as SHOM in France or UHKO in Great Britain. Besides, I do not know if these tables exist in Grib version. I even think that it does not exist.

See, for example, this website: https://openskiron.org/en/openwrf

The grib files you download from this website contain both wind and currents (and other data).

And it's very effective with WeatherRouting. I used this type of grib file a lot this summer.

That said, I do not know if for other parts of the world there are the same kind of grib files.

[NeilA]

I've recently updated to V5.0.0 and the compatible weather routing plugin. When I generated a weather route just now the route completed but End Time and (Elapsed) Time are blank. I was previously weather routing successfully with 4.8.8. Can anyone help me?

[DavidBurch]

The tidal current files you reference download and unzip and load into v5 very well. so I think you might need to just highlight both wind grib and current grib and load them both into the program to run the routing app. This worked in v4.8. we have not tested the routing yet in v5.

Originally Posted by registry

Hi,



how can i include tidal gribs into the route calculation next to the weather grib files?



Here ftp://ftp.bsh.de/Stroemungsvorhersagen/ eg. i cna get tidal predictions... and would like to use them in the WR... is it possible?



Cheers,
Registry

[registry]

Cool web site. Here grib files contain tidal currents and it seems to work for english channel. At least routing with and without current delivers different routes.



I didn't try to comibine NOAA GFS gribs and tidal from the bsh.de ... Gotta try it.


Thnx for info!


Slowly i learn WR and found that one can take into account time for tacking (great!). Just sometimes it seems to deliver strange routes where you basically tack every 100 m instead of using the available distance and minimaze number of tacks. But might be i did something wrong in settings.

Originally Posted by Gilletarom

Hello Registry
Which country are you from? This is an important question to answer your own question.

if you are European, comme je le pense, it is preferable to load grib files containing also the current data, rather than wanting to use current tables as those that can be produced by Hydrographic Offices such as SHOM in France or UHKO in Great Britain. Besides, I do not know if these tables exist in Grib version. I even think that it does not exist.

See, for example, this website: https://openskiron.org/en/openwrf

The grib files you download from this website contain both wind and currents (and other data).

And it's very effective with WeatherRouting. I used this type of grib file a lot this summer.

That said, I do not know if for other parts of the world there are the same kind of grib files.

[rgleason]

Originally Posted by NeilA

I've recently updated to V5.0.0 and the compatible weather routing plugin. When I generated a weather route just now the route completed but End Time and (Elapsed) Time are blank. I was previously weather routing successfully with 4.8.8. Can anyone help me?

Zoom in, it probably did not complete.
Set interval smaller to complete, or move finish out from land.

[rgleason]

As David explaned, wxroute can read two different grib files, just highlight them both and load.

[Flaviotti]

Hello,

I begin saying how much I admire this plugin. It's UI are outstanding and, more importantly, its features tremendously interesting.

I have done some testing with a pol file that is hard coded to 5kts for every situation, to be able to follow the logic and troubleshoot the routes, and my question is about currents calculations.

It seems that for some reason it fails to factor in the current to the route speed.
In this picture, the route position displays the point where the boat is going through a patch of current of .6kts to pretty much the same direction of the boat heading, but the displayed speed for that point is still 5kts. I would expect something around 5.5kts.


The climatology plugin displays correctly the current on the chart.
The weather routing setting included climatology's current as most probable.

Is anyone able to see whether I am missing something, or is a bug worth reporting?

Thanks and again: awesome work with this plugin!

[rgleason]

Flavotti,
You are using

1. Currents from Climatology_pi
2. Wind from a Grib file.


I don't believe the plugin will do that. It is not a bug, it is just not a feature.
If you use
1. Wind from Climatology
2. Currents from Climatology

It will work.


If you use

1. Wind from Grib_pi
2. Current from Grib_pi
It will work.


You can certainly add this as a Feature Request in Tracker (and Vote for it) and in Github under "Issues"

[kevinvh]

Anyone know when the Weather_Routing_Pi will be available for OpenCPN 5.0.0 for Mac? Is there anything else that would prevent me running Weather Routing on OpenCPN 5.0.0 for Mac.

I am running OpenCPN 4.8.8 for Mac and the Weather Routing plugin works really great on it - proved invaluable sailing around French Polynesia. Do I need to do a clean install of v 5.0.0 or can I write over the top of v 4.8.8?

[bcn]

In case of macOS you can use parallel installs as well.

Your actual system shows up as "OpenCPN" under Applications
If you want to install a more recent version of OCPN change the name of the application first. Opencpn-4-8-8 for example.

Then install the actual one.
You will need to install the corresponding plug-ins as well and those will go into the new opencpn application.
The plug-ins for the 5.x series are different. Sharp look-out at Opencpn.org/downloads!

Hubert