Re: [Gpsbabel-misc] combine, simplify, change, convert

[Roger <ar...@ma...>]

Probably not the most efficient but here is what I got to work since I 
couldn't get gpsbabel kml output files to be correctly read by Google-Earth.

This following contains most of what I do :

gpsbabel -t -i gpx \
-f Zumo-2011-07-13.gpx \
-f Zumo-2011-07-14.gpx \
.
. # Many more daily tracks not included
.
-f Zumo-2011-09-18.gpx \
-x track,merge,title="RoadTrip-2011" -o gpx -F Combined.gpx

# Filter the points because track over 15,000 miles
gpsbabel -t -i gpx -f Combined.gpx -x simplify,crosstrack,error=500m -o 
gpx -F Combined.gpx

# Format track for linewidth and colour
gpsbabel -i gpx -f Combined.gpx -o 
kml,trackdata=0,line_width=5,line_color=FF000000 -F Combined.kml

# Extract all the times for kml format Google-Earth likes
cat Combined.kml | sed -n '/when/p' |sed  's/<TimeStamp>//' | sed 
's/\(.*when>\)<.*/\1/' > /tmp/kml

# Extract matching locations for kml format Google-Earth likes
cat Combined.kml | sed -n '/<coordinates>.*<\/coordinates>/p' | sed 
's/coordinates/gx:coord/g' | sed 's/,/ /g' >> /tmp/kml

#  Add proper kml header to times, locations and proper kml footer
cat RoadTrip_header.kml /tmp/kml RoadTrip_footer.kml > RoadTrip.kml

# Create kmz file for Google-Earth
zip -f RoadTrip.kmz RoadTrip.kml

Of course, the above is extracted from a script file.

I would much appreciate it if someone can show me how to accomplish the 
same result, i.e. create a kmz file readable by Google-Earth more simply 
and directly with gpsbabel.

In any case I hope this helps,
   Roger

On 11-09-21 09:46 PM, Robert Lipe wrote:
>
>
> On Wed, Sep 21, 2011 at 8:33 PM, Paul Gareau <pg...@gm... 
> <mailto:pg...@gm...>> wrote:
>
>     That's roughly what I'm trying to do. I have about 80 gpx files from
>     an igotu GPX, I've combined them using the DOS trick "copy *.gpx
>     combined.gpx", and then I used a text editor to remove the extra tags
>     that don't belong in the middle of the combined file. What I want to
>     do is reduce the number of points in the combined file, convert it to
>     a kml and upload it to Google maps so that I can see a line following
>     my route. So far it works, except that I only get points on the google
>     map and not a line. Any advice on how this can be done?
>
>     The command I tried last is this:
>     gpsbabel.exe -i gpx -f all.gpx  -x transform,wpt=trk -x
>     simplify,count=1 -o kml,trackdata=0,labels=0 -F simple.kml
>
>
> I like to debug one thing at a time.
>
> does ... -i gpx -f all.gpx  -x transform,wpt=trk -o gpx -F whatever.gpx
>
> give you a GPX file with tracks?   Then proceed to the next step and 
> add the simplify to the middle.  Hand-examine the fresh GPX.
>
> Simplifying a track to contain only one point will make for very 
> boring tracks.   (This is where I think you jumped the track....get it?)
>
> Then you can experiment with the options to the KML writer to sweeten 
> to taste.
>
> Good luck,
> RJL
>
>
> If you find GPSBabel useful, especially if a feature was added or 
> fixed for you, please consider supporting its development at 
> http://www.gpsbabel.org/contribute.html
>
>
>
>
>
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