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[mkgmap-dev] polygon splitting/more than 255 polygons errors

From WanMil wmgcnfg at web.de on Fri Sep 2 15:02:32 BST 2011

Hi Richard,

> Hi,
>
> I have recently downloaded some mkgmap generated maps that produce this error when displayed
> in navit:
> :garmin_obj.c:1279:1|:Error more than 255 polygons/lines in a subdiv are not supported

This does not look like an mkgmap problem to me. Reading the error 
message I assume that navit does not support subdivisions containing 
more than 255 polygons + lines. But as far as I know there is no such a 
limit for garmin devices.

>
> It seems there were some patches for this around, did they get integrated? Do they
> require some special option?

There is at least one known bug regarding the creation of subdivisions. 
I am working on it and will post the patch when it is ready to commit.

There is a first version of the patch (see 
http://www.mkgmap.org.uk/pipermail/mkgmap-dev/2011q2/011818.html) but 
some things are not fixed in it.

>
> Tried to reporduce the issue it with mkgmap-r2009 and attached test data, I get neither
> the above error but the object (the Altenburg in Bamberg) isn't displayed either.

Can you please how you created your map?
1. Where did you get your data from?
2. Did you use splitter and which splitter settings do you use?
3. Please send your complete mkgmap parameters.
Otherwise it is not easy to reproduce the problem.

Thanks!
WanMil

>
> Richard
>
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