[OSM-talk] New Popular Edition in JOSM

[Nick Burch]

On Sun, 12 Nov 2006, Tom Chance wrote:
> It happens in quite a small area, though it looks like a slight fold in 
> the paper might be partly to blame. It does also happen in small 
> residential areas, though, where some roads just seem wrong. Ah well, 
> it's useful for some things and looks really good, and I'm sure it's not 
> a projection issue on Nick's part since it would have to look obviously 
> distorted if it were.

What you probably want is a mode when you can see the tile edges. If the 
tile edges remain the same distance from the grid lines over an area, then 
you know you're calibration's file. If the tile edges and the grid lines 
change their relative distances, you'll know you need to re-calibrate.

Oh, and if your tile edges overlap with the grid lines, then those tiles 
are already prefectly calibrated as it is :)

(Figuring out the distance from tile joins to grid square joins is how the 
gpx tracer does calibration)

Nick