On 19.01.2010 00:59, Steve Ratcliffe wrote:

Hi Mark

My patch doesn't fix the H& V artifacts - I believe those are caused
by mapsource (they also appear in maps made with cgpsmapper).

Oh OK, I've attached a picture of the worst bit - that is expected then?

I took another look at the NZ maps on your suggestion and there are indeed a few artefacts there which look similar. Interesting. If there is no obvious reason, then reducing the number of sea polygons would be a good idea I suppose.

..Steve
  

Well first without sea (1500km scale) - these are the only lines that are noticeable on my map compile (no matter how close I zoom in, they won't multiply), you seem to have a completely different problem.