Re: [Gpsbabel-misc] Lowrance routes?

[Robert L. <rob...@us...>]

> When I import a Lowrance USR file to Google Earth KML format, routes
> get translated in as both a path and an ordered series of points.
> 
> When I convert the KML file back, no routes are copied to the USR file.

KML is amazingly expressive, but the mapping of KML into the traditional
model of waypoints/tracks/routes has compromises.   

You'll likely find that your route is becoming a track. The real problem
is that KML doesn't really distinguish between the two and we do.

If I start with a lowrance file that has one route that contains two points:

 gpsbabel -i lowranceusr -f enchilada.usr -o kml -F l.kml

and then convert KML that to either GPX  or back to Lowrance

 gpsbabel -i kml -f l.kml -D9 -o lowranceusr -F /dev/null

I see that we treat that two point polyline as a track and not a route.

Offhand, I can't think of a way to programmatically determine this, but
I'll think about it more later.


Knowing that you can build from source, if you *know* you never care
about reading KML polylines as tracks and always want them to be routes,
change the two occurrences of "track" in kml.c::trk_coord() to "route".