[mkgmap-dev] Please try branch check-precomp-sea

Sun Apr 25 11:11:39 BST 2021

Hi

I presume this will be most use to people who generate sea-latest.zip.

I use --generate-sea=..., so using the current OSM data for the area
concerned, and, before loading onto a device, look at the overview map
with GPSMapEdit to check the sea has worked correctly.

If the country cut has problems, eg Spain without Portugal, I use sea.z
ip and again check with the overview map. If still problems, try an
older or newer version of sea.zip

Ticker

On Sat, 2021-04-24 at 13:12 +0000, Gerd Petermann wrote:
> Hi all,
> 
> just noticed that this branch was not merged because I got no
> feedback. A few weeks ago Eric complained about bad precomp-sea data
> and a lot of wasted time to find it. Any reason why nobody is
> interested?
> 
> Gerd
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag
> von Gerd Petermann <GPetermann_muenchen at hotmail.com>
> Gesendet: Donnerstag, 17. September 2020 11:34
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] Please try branch check-precomp-sea
> 
> Hi all,
> 
> I've implemented some basic checks to detect large flooded areas in
> the precomp-sea data in this new branch.
> A link to the latest binary (r4579 as of now) is a the bottom of the
> normal download page :
> http://www.mkgmap.org.uk/download/mkgmap.html
> 
> - If PrecompSeaGenerator is used to calculate the sea data and the
> index check fails a warning is printed and the program ends with rc 
> -1.
> - If mkgmap is used with a "dubious" sea.zip one or more messages
> about the problematic areas are written and the program stops with an
> ExitException
> unless option --x-check-precomp-sea=0 is given before the first input
> file.
> 
> The index test is normally performed once for the whole planet, so it
> doesn't care about the actual tile boundaries. If e.g. only a part of
> Australia is flooded and you create a map for the UK you'll still see
> the errors.
> 
> BTW: The current code (also in trunk version) doesn't support to use 
> --precomp-sea with different values. Results are rather
> unpredictable.
> 
> Gerd
> 
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
> _______________________________________________
> mkgmap-dev mailing list
> mkgmap-dev at lists.mkgmap.org.uk
> https://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev