OpenStreetMap Forum

Cathy Scott

Member

Registered: 2008-11-11

Posts: 3

Converting a GPX file to a route

Hi,
I am a PhD student in the area of Emergent Computing. My area of interest is in researching the route planning strategies of cyclists.

In order to do this research the cyclists that I am studying will create GPS data as they cycle around Edinburgh and then either upload it to a site such as trailfinder or similar or email it to me.

In order for me to use this to analyse this GPX file I need to convert it to a list of nodes that they have visited.

I could write a piece of software that looks at all the latitude/longitude points in the GPX file and then searches for a node within a set radius, say 5m so that I can produce this list of nodes.

However does any code like this already exist? If so it would be good to reuse it...

Thanks,
Cathy

emj

Member

From: .se (59.3N17.99E) 0735969076

Registered: 2006-06-18

Posts: 949

Re: Converting a GPX file to a route

If you really want all nodes around the route that the biker took: then this is a common problem called "Get me all Points of Interests (POI) around this route", it's used among geocachers to find all caches that are x km from their route. I'm pretty sure you can do something similar with standard GIS tools as well.

I think perhaps gpsbabel can do it with GPX routes (not traces).
PostgreSQL can probably do it in some way easy way (lets ask JRA) <---  got with this
Grass/ArcView has magic GIS pixie dust <--- or dust

So no there is no tools that does exactly what you want, lots of way to do it, big help right?. :-)

Cathy Scott

Member

Registered: 2008-11-11

Posts: 3

Re: Converting a GPX file to a route

emj,
Thank you for your help. I will now beetle away and try it out.
Cathy