I’ve been trying to solve a strange programming problem on my map server. I have these files containing contour data (elevation data) for my fictional places. Because of the way this information is processed by the openstreetmap platform, I store this data split up into files divided along longitude and latitude lines. But that means there are boundary conditions between the files. When I use the specially-created terrain conversion tools on these files, I seem to often get strange “canyons” along the longitude and latitude lines. They look like this on the map’s contour render.
So I have spent a few days trying to find the right set of parameters for the data conversion programs (developed by the founder of the opengeofiction website) to prevent these artificial canyons from appearing. It seems to be a bit of a hit or miss proposition. I’ve got it looking good now, but I’m still not sure quite what the issue is or how to systematically avoid it.
