[mkgmap-dev] Mkgmap dropping data

Wed Aug 3 18:17:37 BST 2011

I am afraid but I have to ask: where's the problem? I don't see it.

Maybe you could try to use the NSIS installer to install the map in 
MapSource. This avoids to have some unknown software in the tool chain.

By polygons I mean multipolygons and polygons. Multipolygons are 
converted to normal polygons by mkgmap.

WanMil

> The red areas are the actually rendered areas.
>
> http://imageshack.us/photo/my-images/64/screenshot717201110719p.png/
>
> This is the result by splitting it to 8 pieces. The eastern part is
> already OK.
>
> By polygons do you mean multipolygons? I'm sure I broke a lot of
> multipolygons by splitting the map into 36, but it seems to be working.
>
> Zsolt
> Herrbert74
>
> On Tue, Aug 2, 2011 at 7:52 PM, WanMil <wmgcnfg at web.de
> <mailto:wmgcnfg at web.de>> wrote:
>
>      > I had another go with splitter this morning and it worked out.
>     But it's
>      > strange.
>      > If I split Hungary into 3-4 pieces, the eastern part is usually
>     OK. But
>      > even if I split Hungary into 33 pieces I get bad areas on the western
>      > part or near Budapest. I splitted it to 36 and it worked with
>     this command:
>      > java -Xmx1024m -jar splitter.jar --max-nodes=110000
>      > c:\osm\osmdata\hungary.osm.pbf
>
>     What do you mean exactly with bad areas?
>     Maybe you can send an image to show that.
>
>     Usually for polygons it is better to select a higher max-nodes and/or
>     overlap parameter in the tile splitter because this increases the
>     probability that the polygons are contained completely in the tile data.
>
>      >
>      > But why is it that Eastern Hungary is OK with a million nodes? Is it
>      > because it's not so well mapped and it has less relations and/or
>     errors?
>      > Can I somehow rejoin the parts to have less areas?
>      >
>      > It would be useful if mkgmap would send a message which areas it
>      > couldn't render and why.
>      >
>      > Another question:
>      > Was I totally wrong using Osmosis to split the data or is there a
>     method
>      > which works with routing? To have counties is a bit nicer. I used the
>      > following (obviously breaks data):
>      > call osmosis.bat --read-pbf c:\osm\osmdata\hungary.osm.pbf
>      > --bounding-polygon file=c:\osm\osmdata\county_boundaries\pest.poly
>      > completeWays=no completeRelations=no clipIncompleteEntities=true
>      > --write-xml c:\osm\osmdata\counties\pest.osm
>
>     I cannot say for sure but I would expect that using non rectangular
>     tiles is not really supported by mkgmap.
>
>      >
>      > 2011/8/1 Carlos Dávila <cdavilam at orangecorreo.es
>     <mailto:cdavilam at orangecorreo.es>
>      > <mailto:cdavilam at orangecorreo.es <mailto:cdavilam at orangecorreo.es>>>
>      >
>      >       El 01/08/2011 22:36, Zsolt Bertalan escribió:
>      > > Hello
>      > >
>      > > I try to render a Garmin map of Hungary from OSM data with my own
>      > > rules and typ file. At first I used the Tile Splitter, but
>     whatever I
>      > > did, I didn't manage to render a good map.
>      >     splitter should work fine with Hungary data and you'll get
>     inter-tile
>      >     routing working. Can you provide the command you used to
>     split the data?
>      > > Then I extracted county borders (Hungary has 19 counties), and used
>      > > Osmosis with polygon borders to split the data. I managed it. But
>      > > meanwhile CLC data was imported (I think this might be the culprit)
>      > > and I can't do it again. Four counties have only half the data in
>      > > Mapsource. They are not big, so I don't think that the size is the
>      > > problem.
>      > > I use MapSetToolkit with cgpsMapper to upload to MapSource. Here
>      >     is an
>      > > example of how I use mkgmap:
>      > > java -Xmx1024M -ea -jar mkgmap.jar --charset=latin2 --route
>      > > --style-file=c:\osm\mkgmap\resources\styles\herrbert
>     --family-id=5000
>      > > -c c:\osm\osmdata\counties\template.args --tdbfile
>     --description="OSM
>      > > Hungary" 50000.typ
>      >     If I remember right, -c option should be the last in you
>     command line.
>      > >
>      > > I fI use the route option, cpreview crashes.
>      > >
>      > > I used osmosis with the following options:
>      > > completeWays=no completeRelations=no clipIncompleteEntities=true
>      > > I think this is not optimal for such a map, because I can't route
>      > > between two counties (ways are split without a common node).
>     But what
>      > > are the best options?
>      > >
>      > > What am I doing wrong? If you need any more detail I'd be glad to
>      > > provide it.
>      >
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