GerdP schrieb: Hello Gerd,
Michael Prinzing-3 wrote
Although I am creating a map for Germany, there are some huge but almost empty tiles up to N 60°. One of them covers the whole area between Berlin and Helsinki, others are far out on the Atlantic Ocean, west of Scottland. If Mapsource automatically selects an projection angle in the middle between the points with the max. and the min. latitude, this will result in a projectoion angle of more than 50° for my map and so almost the whole area of Germany appears to be squeezed.
Is there an easy way to remove these tiles from the map (I think they only contain ferry lines, pipelines etc.) without using --keep-complete=false for the splitter and without causing artifacts by cutting the contour lines (they are merged to the OSM data before splitting)?
Strange. When I create a map for Germany the tiles are not covering much more. I assume the problem is caused by the SRTM data.
I'll have a deeper look into this, but I cannot imagine the contour data being the cause. I've created the contour data for the rectangle 47.15 5.75 55.15 15.15 This is a lot smaller than the areas covered by the almost empty tiles. Even more, I am splitting the contour lines into parts, none of them consisting of more than 2000 nodes, and then I am using osmosis to cut them to the shape of Germany. I have to use osmosis' parameter completeWays=yes when I am doing this, but even if 1999 out of the max 2000 nodes of a contour line are outside the bounding polygon this should be no more than a few kilometers. It's difficult to find the few data inside the huge and almost empty tiles without coastlines and cities, but at N 54° 42,0' E 13° 51,0' for example there are 3 ferry lines crossing: "Swinoujscie - Trelleborg", "Finnlines" and "Klaipeda - Kiel". All these lines leave the area my map should cover and seem to be included completely.
You can use a polygon file with splitter to make sure that you only get tiles for the wanted area.
Isn't a line starting inside the bounding polygon and ending outside inluded completely if --keep-complete=false is not set? Thank you, Michael