[mkgmap-dev] Compilation fails building France map

Sat May 23 17:18:41 BST 2020

Hi Steph

I had these kinds of problems in my early days when trying to build a full-europe map.
I'm not the expert, but what I find out was that it I looks like the overviewmap is one big *.img file
And so combines everything you put in your lower overview levels 17,16,15,14 & 12 together
Above the overview levels (18-24) multiple tiles are created giving you an 'endless' amount of space but for the overview levels its whatever fits in this one img file. There is a limit (don't know how much)
(If I remember correctly I even had to wait 6 hours before at the very end the overview map was written and failed the process)

For me, it did not help to use less levels but just limiting the amount of stuf drawn starting from 12 to 17
I adjusted 98% of my polygons and lines to be sure they start above 17 and/or use the --polygon-size-limits option to filter out smaller pieces.

For now I can build a full Europe map including France and it still fits within the overview limits
For the overview map levels I only use
- motorway, trunk and primary (but not the motorway_link, trunk_link and primarylink)
- for every level 12-14-15-16-17 I even use a different line code and line-width only because it just looks nice when zooming in
- no tunnels, bridges, railways or oneway
- Only waterways if the water-way relation is tagged longer dan 50km
- Only residential landuse to highlight city area's
- Only natural = * & area_size() > 2000000 (which is approximately 3km x 3km)

Since then, problems gone
Kind regards
Joris

-----Oorspronkelijk bericht-----
Van: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> Namens Steph
Verzonden: zaterdag 23 mei 2020 11:09
Aan: Development list for mkgmap <mkgmap-dev at lists.mkgmap.org.uk>
Onderwerp: Re: [mkgmap-dev] Compilation fails building France map

Thank you !

Got the same levels and overview-levels as default style.
levels = 0:24, 1:22, 2:20, 3:18
overview-levels = 4:17, 5:16, 6:15, 7:14, 8:12

How can I make overview lighter ?
Supressing a level ?
Decrease max-nodes with splitter ?

Steph

Le 23/05/2020 à 11:50, Gerd Petermann a écrit :
> Hi Steph,
> 
> it seems your overview map contains too many details. Compare the options levels and overview-levels with the default style.
> 
> Gerd
> 
> ________________________________________
> Von: mkgmap-dev <mkgmap-dev-bounces at lists.mkgmap.org.uk> im Auftrag 
> von Steph <st3ph.martin at laposte.net>
> Gesendet: Samstag, 23. Mai 2020 10:07
> An: Development list for mkgmap
> Betreff: [mkgmap-dev] Compilation fails building France map
> 
> Hi,
> 
> Since a couple of days the compilation for my France map fails.
> 
> Perhaps the output log could help you to indicate me the direction I 
> should investigate.
> 
> - mkgmap-r4486
> - java -version:
> openjdk version "13.0.2" 2020-01-14
> OpenJDK Runtime Environment (build 13.0.2+8) OpenJDK 64-Bit Server VM 
> (build 13.0.2+8, mixed mode)
> 
> - France.log:
> Time started: Sat May 23 10:15:31 EAT 2020 The following styles are 
> available:
> default           1.27: "Default style" modifié.
>         Style détaillé pour un usage pédestre mais
>         fonctionnel aussi en usage cycliste ou motorisé.
> Found one style in /home/steph/osm/styles/default/ finished 
> check-styles Number of MapFailedExceptions: 0 Exception in thread 
> "main" java.lang.AssertionError: 164041
>         at
> uk.me.parabola.imgfmt.app.BufferedImgFileWriter.put2u(BufferedImgFileWriter.java:164)
>         at uk.me.parabola.imgfmt.app.trergn.Zoom.write(Zoom.java:81)
>         at
> uk.me.parabola.imgfmt.app.trergn.TREFile.writeMapLevels(TREFile.java:215)
>         at
> uk.me.parabola.imgfmt.app.trergn.TREFile.writeBody(TREFile.java:123)
>         at uk.me.parabola.imgfmt.app.trergn.TREFile.write(TREFile.java:342)
>         at
> uk.me.parabola.mkgmap.build.MapBuilder.makeMap(MapBuilder.java:305)
>         at
> uk.me.parabola.mkgmap.combiners.OverviewBuilder.writeOverviewMap(OverviewBuilder.java:191)
>         at
> uk.me.parabola.mkgmap.combiners.OverviewBuilder.onFinish(OverviewBuilder.java:104)
>         at uk.me.parabola.mkgmap.main.Main.endOptions(Main.java:674)
>         at
> uk.me.parabola.mkgmap.CommandArgsReader.readArgs(CommandArgsReader.java:125)
>          at uk.me.parabola.mkgmap.main.Main.mainStart(Main.java:143)
>          at uk.me.parabola.mkgmap.main.Main.main(Main.java:114)
> 
> 
> Two little overlays (for ski resorts and particular osm tags I want to
> verify) are correctly produce.
> The main map compilation fails!
> 
> Regards.
> 
> Steph
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