On Fri, Aug 6, 2010 at 10:10 AM, Ludovic Granjon <ludovic.gran...@gmail.com> wrote: > Thank you Sean for your answer > > No, my data have projected geographic coordinates. There are in NTF / > lambert 2 étendue EPSG 27572. > > Here is what I do in the script : > I read a shapefile with ogr, I load them for using with shapely, I cut the > lines every x meters and I save them in a new shapefile. > > The difference between the distance in input and the distance calculated by > the software is very small. For exemple if I have 100km in input, the > software calculate some distance about 100.130 km. > > It's insignificant, but perhaps the script's user might not understand. > > But if there no way to resolve that, I can specify this in the > documentation. In any case the relief is not taken into account also, so > it's not a big problem. > > Thank's >
Ludovic, If you can provide any script that will reproduce the problem, I'll be happy to look into it. Perhaps there's a bug in our linear referencing code. For simplicity, the script would provide a feature as WKT or hex encoded WKB instead of a shapefile. Cheers, -- Sean
