[mkgmap-dev] contour map error

Tue Dec 22 09:25:12 GMT 2009

Hi Apollinaris,

> Got 7 of these errors for US Region_01 (161 tiles). What is the best way
> to resolve? img file is still created
> - split into tiles
> - split contour lines for minor, medium, major into different osm files?
> - ignore, can't find any obvious problems in the map at this location
> 
> I use srmt1 hgt 1x1 degree tiles, gdal_contour  with 25m contour lines.
> 
> SEVERE (MapSplitter): Area too small to split at
> http://www.openstreetmap.org/?lat=43.78618&lon=-113.26460&zoom=17
> (reduce the density of points, length of lines, etc.)

As an experiment, you could reduce the value on line 139 of
uk.me.parabola.mkgmap.build.MapSplitter.java from 100. That value is quite arbitrary. It would be interesting to see what happens if you set it to, say, 10.

Splitting the contour lines into a small number of pieces should also
make the problem go away. i.e. halve or quarter them.

Cheers,

Mark