[mkgmap-dev] Include the following patches into trunk -- Patch4 - decrease douglas peucker error

Thu Mar 3 21:37:13 GMT 2011

For lines it works perfect. But somehow polygons really get munged and 
destructed (lots of straight line holes - that are fewer without this 
patch).

Could you check what is going on for polygons? For polygons the old algo 
should be used, it looks like it would be even worse than the straight 
line algo has ever been before.