Write " GPX_USE_EXTENSIONS=YES" in the "OGR
creation options", "Data source" section
like this:
Remember to choose EPSG:4326 as the CRS. Thats the only CRS that
the GPX format formally support
Regards
Bo Victor Thomsen
Aestas-GIS
Denmark
Den 28-08-2012 16:40, M.E.Dodd skrev:
The ‘save as’ command in qgis seems to strip out attribute
data when creating files of certain sorts such as .gpx and
also gives problems with .kml where the markers are not
identified with any of the attributes. Are there any
workarounds for these problems?
More detail on the .gpx issue, it will produce a .gpx file
if you select ‘skip attribute creation’ but if you don’t
select this then it fails with the error message:
“Export to
vector file failed.
Error:
creation of field tree_id failed (OGR error: Field of name
'tree_id' is not supported in GPX schema. Use
GPX_USE_EXTENSIONS creation option to allow use of the
<extensions> element.)”
It appears to
be quite a helpful error message except that I can’t see
anywhere to “Use GPX_USE_EXTENSIONS creation option”
Qgis 1.8 or 1.9 on windowsxp
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