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[mkgmap-dev] [PATCH v1] - round coordinates when zoomed out

From Felix Hartmann extremecarver at googlemail.com on Tue Nov 17 12:58:08 GMT 2009

Mark Burton wrote:
> Hi Felix,
> Many thanks for taking the time to try that patch.
> Your results are interesting because I don't see those issues with
> the maps I am testing.
> So, please tell me for the examples you sent, what mapsource zoom
> level are those images shown at (i.e. what is the scale distance in the
> corner of the image) and also what is the OSM URL for the second
> location (B18 + railway) because I haven't been able to locate that one.
> Cheers,
> Mark
okay, follow up.

The double lines feature is really strange. It happens on the Alps file, 
but not on Austria file. As I can only spot one big error, I think it is 

As for the second picture, it's all about the douglas peucker filter 
distance. Actually I think 5.4 is the way to go (now that holes are 
filled). 2.6 was enough for the crippled roads to mostly disappear (5.4 
still looks nicer). Using filter distance 1.3 many of those problems 
will appear.

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