On Feb 7, 2009, at 23:14, Mark Burton wrote:
The attached patch appears to fix the wild zooming away and back again problem we have been seeing in the routing. Please test.
[patch switching lat/lon offsets to correct order for large offsets] Thanks Mark, that's great! A simple bug! I was hunting for some error in our understanding of the format... For reference, these offsets store the coordinates of the routing nodes, and big offsets show up in large (bounding-box wise) route centers, which may show up if these route centers contain long roads.
The interesting question is: why didn't it show up in mapsource?
We're writing some redundant data -- for instance, the routing nodes' coordinates also occur as coordinates in the corresponding polyline. Mapsource may well route along the routing graph in NOD, but only draw using the TRE/RGN data, while the GPS receivers handle this differently. Cheers Robert