Thanks for the answers.
Oruxmaps do transform form 4326 to 3857 when loading gpx or kml, as Jukka
pointed out: it is easy to work on epsg 4326 in Openjump, digiting tracks
and saving as kml. Then loading into Oruxmaps.
Peppe
2017-08-31 0:45 GMT+02:00 <edgar.sol...@web.de>:
> there seem to be several java gpx libraries out there
> https://stackoverflow.com/questions/3495052/gpx-parser-for-java
>
> so the hard work seems to be done already.
>
> ..ede
>
> On 8/31/2017 0:15, Rahkonen Jukka (MML) wrote:
> > Hi,
> >
> >
> > I guess that you mean GPX format
> >
> > http://www.topografix.com/gpx.asp.<http://www.topografix.com/gpx.asp>
> There is an importer made by Landon Blake in
> >
> > https://sourceforge.net/projects/surveyos/files/
> SurveyOS%20OpenJUMP%20Plug-Ins/GPX/ . Zip file has also source code
> packed into the jar files and importer seems to be based on GeoTools and
> development was done by Landon Blake
> >
> > http://osgeo-org.1560.x6.nabble.com/Preview-Experimental-GPX-Code-
> td4296936.html.<http://osgeo-org.1560.x6.nabble.com/
> Preview-Experimental-GPX-Code-td4296936.html> I believe that the module
> was experimental and that has removed from Geotools.
> >
> >
> >
> > Probably GPX writer should be written from scratch. It would not be very
> simple because GPX has a tree-like structure: track points are the primary
> geometries, track segment is a list of track points and finally track is a
> list of track segments.
> >
> >
> > If someone starts to write GPX driver it might be good to read how GDAL
> is handling the conversion between simple features and GPX objects
> >
> > http://www.gdal.org/drv_gpx.html
> >
> >
> > There can't be an option to write KML in EPSG:3857 because KML by
> definition supports only EPSG:4326 longitude-latitude coordinates. But that
> is also the case with GPX and I believe that OruxMaps knows how to do the
> conversions.
> >
> >
> > -Jukka Rahkonen-
> >
> >
> > ________________________________
> > Lähettäjä: Giuseppe Aruta <giuseppe.ar...@gmail.com>
> > Lähetetty: 30. elokuuta 2017 16:56
> > Vastaanottaja: OpenJump develop and use
> > Aihe: [JPP-Devel] Export to GPS file
> >
> > Hi all,
> > does OpenJUMP have a way to export to a gps file format? I saw we have
> some gps importer plugin. My idea is to create a track using OJ as
> linestring and than to convert it to a gps file (in order to load into a
> software like Oruxmap (http://wiki.openstreetmap.org/wiki/OruxMaps) or
> Google Earth.
> > We have a KML exporter that could work fine but it seems to me that it
> hasn't an option to export file to pseudoMarcator EPSG:3857 projection
> (mostly used by OruxMaps or Google earth).
> > Best regards
> > Peppe
> >
> >
> >
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> >
>
>
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