Swedish oeSENC charts to come - with our help.

[Hakan]

Hans-Henrik..
1) The triangles are showing the quality of the crude data for the actual location. If it's well investigated or not. More stars equals better data. The same for all ENC charts round the world.
Since you see them you've have probably selected "Mariners Standards" in "Vector Chart Display". If you deselect "Quality of data" from the check list they'll disappear.
Or use the key "U" or Menu->View->Show ENC Data Quality. (Use the left "alt" to toggle menu)


2) Chart text can quickly be hidden/shown by the key "T" but be sure to have correct text options checked in tools->charts->Vector chart Display.
See my example below.


More to read: https://opencpn.org/wiki/dokuwiki/do..._setting:chart
Håkan

[hhmcsv]

Nohal and Hakan ,
Thank you very much for the guidance, I clearly need more experience in using vector-charts

/Hans-Henrik

[motorbaad]

Today the danish charts were unavailable in the shop. Has something gone wrong, or will they come back soon?
Michael Denmark.

[bcn]

Denmark:

there surfaced some fineprint in an annex to the licensing conditions that forces us to separate the subsets of Denmark, Faroers and Greenland into individual sets.

We plan to do that tomorrow, Thursday.

[hhmcsv]

That sounds like a good idea, if then the price will be adjusted to the individual sets. I did get them all, but frankly to the average cruiser in Denmark, maps of Greenland and Faroe islands are of limited value.

Another point to the coverage: When you buy commercial sets from e.g. NV, then the coverage will be for sailing areas and not national boundaries. Of particular interest for many sailors in the Copenhagen area, maps of the west coast of Sweden are crucial. But then you have to buy maps of entire Sweden at a relatively high cost.

/ Hans-Henrik

[hhmcsv]

Danish maps seems to be available:

Denmark 2018 - o-charts

[bcn]

Yes , Denmark is back.

And Faroers and Greenland are individual chart sets now.
We don't expect that many downloads for them though...

[BerraJa]

Hi.
After installing oeSENC charts for Sweden I see a need for improving the Laptop's response dramatically.

I'm uising the latest download of OpenCpn 5.0.0 on a brand new Win10 machine i7 16BG/512SSD.

I believe the performance problem might be related to the massive number of oeSENC charts (580 of them) in the default installation folder (?).

Doing zoom or pan creates significant respons issues on the screen.

Does anyone have any hints how to convert to map folders that can be activated/deavtivated upon need for a complex set of ENC maps of Sweden?

The problem I see is that the oeSENC map (file) names doesn't say anything about the area it cover.

Preferrebly I'd like to see and select from i.e:
Sweden west north
Sweden west south
Sweden south
Sweden east south
Sweden east mid
Sweden east north

As said, there are 580 map files with somehow "encrypted" file names in the set of Swedish maps.

Any suggestions are more than welcome.

[bcn]

The Swedish charts are very detailed and "heavy weight" for any system.
But your PC shall not have any issue seeing the RAM and processor.



Make sure that OpenGL is enabled on your PC.

Options|Display|advanced


You can play first with the settings for vector charts. For example a template for overview and a second one for sailing. Don't use Display Category "All".



Try to adjust the zoom detail slider. Perhaps +3 or +4 max.


The chart numbers are derived from the official ones. Just read them backwards.


To make subsets from an oeSENC set and place them in chart groups can be a bit tricky..
You will want to have common overview charts anyhow.


The Norwegian oeSENC comes as five subsets, but there we are talking about more than 1.200 cells and the download would be larger than 1GB.



Hubert

[BerraJa]

Hi and thanks for your quick reply.
OpenGL is on and I've discovered a noticable difference in respons by de-selecting visible details in the chart, as you say.

Templates was new to me so I'll do some tests there.

For sure, it's the overview paning and scaling that worries me here.
The low scale zoom level performes very good while not som many charts there to render I guess.
I can see good use for an "overview" and "sailing setting.

I'll do some more trials.

Thanks

[cagney]

@BerraJa

You can "emulate" the subdivision you are asking for, by using chart-groups.
Just put the charts for an area you want to cover in a separate chart group.
This should speed things up...but I have not done much testing of this idea, more than checking that it works.

Thomas

[bcn]

Thomas,


I said "caution" about sub-sets as one will have to keep the complete xml key file for each of the sub sets...
Updating will need always a manual intervention as well.
Not very practical most probably.


Hubert

[cagney]

Hubert

What I am proposing is not creating a real subset, just cherry picking charts from the existing oeSENC files, when you create a chart group. You can call it a virtual subset. The full oeSENC directory is still registered in "Chart Files/Directories" and processed as usual by O.
More testing needed to find limitations etc.




Thomas

[Hakan]

BerraJa..
Your description is strange. I've all available SE charts, oeSENC, RNC-BSB, CM93, DK-oeSENC and DE-oeSENC charts. The latter to get the 1 500 000 scale overview for Scandinavia. I use a really dated Win10 and don't recognize your description.
I use multi canvas view. One detailed and one overview. For ENC I use "Vector charts zoom scaling" = 0 - 1. OK, if I use zoom scaling = 5 it can be heavy but I see no use for that.
Zooming is not instantly if you speak tens of seconds but good enough. On my more dated XP with the same set-up I have to zoom with more care but that's not what we're talking about.
Could you describe your performance issue in more details? From a detailed harbor to cover Sweden. That's some 15-20 key strokes on +/- or several mouse drag. 1, 2, 3 seconds or?
By the way... You don't happen to have a couple of thousands AIS targets from Marinetraffic? That can dramatically slow down.
As Hubert say the NO-charts are heavier though. But that's not the case for you I think?

[BerraJa]

Hi and thanks for your feedback.

Håkan, your setup gave me a good idea of the ballpark of the expected performance you have.

Tuning the settings in Display category, Vector chart display, and the Scale Wheigting improved the response to a resonable level.

Another hint was that you referred to the +/- keys for scaling.

This seems to be far more reliable than the scroll wheel I'm used to (in CAD etc).
The scroll wheel seems to "jam" the system in my installation somehow.
I guess that causes a good portion of the response delay.

So far I got only Sweden and Finland oeSENC charts installed and no AIS internet datastream (but will have onboard AIS transceiver only for the "VHF distance" range when sailing).

OpenCpn is new to me and I'm trying to get fully comfortable using it before I go "live" in the boat later in spring time. By then the integration into the boats NMEA and LAN should be up and running.



Thanks
Bertil