Re: [Gpsbabel-misc] kml 2 gpx creates empty <trk>

[Marco L. - F. e.V. <mar...@fo...>]

Isn't the z-coordinate optional? gpsbabel works without problems on points:

<?xml version="1.0" encoding="UTF-8"?>
<kml>
  <Document>
    <Placemark>
      <name>Bushaltestelle</name>

<Point><coordinates>8.087170649653299,48.354399548954326</coordinates></Point>
    </Placemark>
    <Placemark>

<LineString><extrude>1</extrude><tessellate>1</tessellate><altitudeMode>clampToGround</altitudeMode>
	    <coordinates>8.127050513790369,48.463281795446683
8.126984652175333,48.463360335109442
8.126911824172245,48.463436095212089
8.126620494894635,48.463739147614568</coordinates>
      </LineString>
    </Placemark>
  </Document>
</kml>

=>

<?xml version="1.0" encoding="UTF-8"?>
<gpx
  version="1.0"
  creator="GPSBabel - http://www.gpsbabel.org"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns="http://www.topografix.com/GPX/1/0"
  xsi:schemaLocation="http://www.topografix.com/GPX/1/0
http://www.topografix.com/GPX/1/0/gpx.xsd">
<time>2010-08-16T16:21:49Z</time>
<bounds minlat="48.354399549" minlon="8.087170650" maxlat="48.354399549"
maxlon="8.087170650"/>
<wpt lat="48.354399549" lon="8.087170650">
  <name>Bushaltestelle</name>
  <cmt>Bushaltestelle</cmt>
  <desc>Bushaltestelle</desc>
</wpt>
<trk>
<trkseg>
</trkseg>
</trk>
</gpx>

:-((

Marco

P.S. it's a valid (?) kml produced by a st_askml(geometry)-function in
postgis enabled postgreSQL Geodatabase.


Am 16.08.2010 17:49, schrieb Robert Lipe:
> 
> 
> On Mon, Aug 16, 2010 at 10:26 AM, Marco Lechner - FOSSGIS e.V.
> <mar...@fo... <mailto:mar...@fo...>> wrote:
> 
>     Hi,
> 
>     I try to convert a kml to gpx. But the <trk> of the resulting gpx-file
>     is empty:
> 
>     kml:
>     <?xml version="1.0" encoding="UTF-8"?>
>     <kml>
>      <Document>
>        <Placemark>
>          <LineString><coordinates>8.127050513790369,48.463281795446683
>     8.126984652175333,48.463360335109442
>     8.126911824172245,48.463436095212089
>     8.126620494894635,48.463739147614568 </coordinates>
>     </LineString>
>        </Placemark>
>      </Document>
>     </kml>
> 
> 
> Your KML is missing the altitude in the position triplets
> 
>     <LineString><coordinates>8.127050513790369,48.463281795446683,0
> 8.126984652175333,48.463360335109442,0
> 8.126911824172245,48.463436095212089,0
> 8.126620494894635,48.463739147614568,0 </coordinates>
> 
> The resulting GPX is thus:
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <gpx
>   version="1.0"
>   creator="GPSBabel - http://www.gpsbabel.org"
>   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>   xmlns="http://www.topografix.com/GPX/1/0"
>   xsi:schemaLocation="http://www.topografix.com/GPX/1/0
> http://www.topografix.com/GPX/1/0/gpx.xsd">
> <time>2010-08-16T15:48:17Z</time>
> <bounds minlat="48.463281795" minlon="8.126620495" maxlat="48.463739148"
> maxlon="8.127050514"/>
> <trk>
> <trkseg>
> <trkpt lat="48.463281795" lon="8.127050514">
>   <ele>0.000000</ele>
> </trkpt>
> <trkpt lat="48.463360335" lon="8.126984652">
>   <ele>0.000000</ele>
> </trkpt>
> <trkpt lat="48.463436095" lon="8.126911824">
>   <ele>0.000000</ele>
> </trkpt>
> <trkpt lat="48.463739148" lon="8.126620495">
>   <ele>0.000000</ele>
> </trkpt>
> </trkseg>
> </trk>
> </gpx>
> 
> 
> 
> I'll put it on my list to recognize the alt-less format in our reader,
> but such KML in the wild seems to be pretty rare. 

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