[mkgmap-dev] Problems with SeaGenerator

Thu Oct 14 16:49:42 BST 2021

Hi Thorsten,

I reverted to r4689 and got similar results for the data, so I'd say it is likely that the shape data is wrong. If there are really no problems in the coastline data there may be a problem in the process that calculates the shapes.

Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Gerd Petermann <gpetermann_muenchen at hotmail.com>
Gesendet: Donnerstag, 14. Oktober 2021 17:15
An: Development list for mkgmap
Betreff: Re: [mkgmap-dev] Problems with SeaGenerator

Hi Thorsten,

okay, I see error messages for the downloaded shapes:
Generation took 620720 ms
Preforming quick check against reference for index file.
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 60.820313,31.289063, index key is 2818048_1441792
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 60.820313,31.992188, index key is 2818048_1474560
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 48.164063,-87.539063, index key is 2228224_-4096000
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 48.164063,-86.835938, index key is 2228224_-4063232
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 47.460938,-89.648438, index key is 2195456_-4194304
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 47.460938,-86.835938, index key is 2195456_-4063232
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 47.460938,-86.132813, index key is 2195456_-4030464
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 47.460938,-85.429688, index key is 2195456_-3997696
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 44.648438,-82.617188, index key is 2064384_-3866624
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, land-only tile is flooded around 42.539063,-86.835938, index key is 1966080_-4063232
SCHWERWIEGEND (SeaGenerator): Precomp sea data seems to be wrong, sea-only tile is now land around -35.507813,-56.601563, index key is -1671168_-2654208
Precomp sea data seems to be wrong. Use option --x-check-precomp-sea=0 to continue risking bad sea data.
Please don't publish this data

I'll try to find out if a recent change in mkgmap causes this.
Gerd

________________________________________
Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Thorsten Kukuk <kukuk at suse.de>
Gesendet: Donnerstag, 14. Oktober 2021 17:11
An: mkgmap-dev at lists.mkgmap.org.uk
Betreff: Re: [mkgmap-dev] Problems with SeaGenerator

On Thu, Oct 14, Gerd Petermann wrote:

> Hi Thorsten,
>
> did not see a warning for tile 2654208_-163840 in my quick check, running full creation now.
> Seems the shapes were refreshed today. The README says:
> Date of the data used is 2021-10-14T00:00:00Z
>
> Did you use that as input or an older version?

I use the OSM data from today (2021-10-14, 01:53 CEST)
and build my own shapes from it.

  Thorsten

> Gerd
>
> ________________________________________
> Von: Gerd Petermann <gpetermann_muenchen at hotmail.com>
> Gesendet: Donnerstag, 14. Oktober 2021 16:39
> An: Development list for mkgmap
> Betreff: AW: [mkgmap-dev] Problems with SeaGenerator
>
> Hi Thorsten,
>
> seems you missed the changes in r4689?
> See https://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=4689
>
> reg. compile: I think these hints are still correct:
> https://wiki.openstreetmap.org/wiki/Mkgmap/help/options#generating_precompiled_sea_yourself
>
> I use open jdk (from AdoptOpenJDK) to build. openjdk version "1.8.0_272" and mkgmap works fine with it.
>
> I'll try to download latest data from https://osmdata.openstreetmap.de/data/land-polygons.html to check if the index file
> sea-check.txt needs to be changed or what else is wrong.
>
> Gerd
>
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag von Thorsten Kukuk <kukuk at suse.de>
> Gesendet: Donnerstag, 14. Oktober 2021 16:26
> An: mkgmap-dev at lists.mkgmap.org.uk
> Betreff: [mkgmap-dev] Problems with SeaGenerator
>
>
> Hi,
>
> Some users reported problems with my sea data, they get error messages
> since about a week like:
> Precomp sea data seems to be wrong, land-only tile is flooded around 57.304688,-3.164063, index key is 2654208_-163840
>
> All coordinates are in Great Britain, and this error and build aborts
> also happens if the data they try to compile is far outside the UK and
> does not contain it.
>
> Since I don't get that with my one year old mkgmap version, I run into
> the first challange: building the current mkgmap version with SeaGenerator
> enabled...
> Is there any chance to update mkgmap and all dependencies to use a newer
> java version?
> I need openjdk-1.8 to build mkgmap and Oracle jre-1.8 to run it...
> mkgmap will not work with openjdk-1.8 and it looks like Oracle does not
> really provide a jdk-1.8 anymore...
>
> Now with mkgmap r4808 I get the same errors already when generating the
> precomp sea data. But I cannot find any problems with tje OSM data: no
> coastline checker reports any problems in the UK area...
>
> Any idea how to solve this correct?
>
>   Thanks,
>     Thorsten
>
> --
> Thorsten Kukuk, Distinguished Engineer, Senior Architect SLES & MicroOS
> SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany
> Managing Director: Felix Imendoerffer (HRB 36809, AG Nürnberg)
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--
Thorsten Kukuk, Distinguished Engineer, Senior Architect SLES & MicroOS
SUSE Software Solutions Germany GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany
Managing Director: Felix Imendoerffer (HRB 36809, AG Nürnberg)
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