Hi again Garth, Well I parked this problem and only just came back to it. I may have missed something, but when I create the new fields you suggested in the Track they contain no information. Is this a very advanced procedure? It seems like something quite basic, but perhaps I've underestimated it (as I usually do with QGIS!).
Kind regards, Jimi. On Fri, Sep 11, 2020 at 11:51 AM J. M <[email protected]> wrote: > Hi Garth, > > Thanks a lot for the very complete answer! I'll give it a go as soon as I > resolve an unrelated Ubuntu problem. I hadn't realised that GPX data wasn't > automatically visible in Properties, and that fields had to be created. > > Kind regards, > Jimi. > > On Fri, Sep 11, 2020 at 4:26 AM Garth Fletcher <[email protected]> wrote: > >> On 10 Sep 2020 at 20:12, J. M <[email protected]> wrote: >> > I can successfully import .gpx files into QGIS, and they are visible and >> > can be clustered in new groups (waypoints, tracks and routes appear as >> > independent layers). The problem I'm having is that I can't seem to find >> > any way to access the data about the routes (distance, time, etc) which >> is >> > clearly visible in the app I used to create the tracks >> >> The GPX file contains a number of fields whose contents you can see / >> access in the layer's Attribute Table >> right-click on layer and choose Open Attribute Table >> >> However, these are only the extra fields in the GPX records but >> NOT including the x,y coordinates (Long,Lat) >> >> To access the later, use the Field Calculator >> select the layer >> click on Open Field Calculator icon (Abaccus) in the menu bar >> which is next to the Open Attribute Table icon in menu, or >> in Processing > GDAL > Vector Table > Field Calculator >> >> create new fields, called Lat and Long, as decimal numbers >> and enter the expression $X or $Y (see Geometry > for details) >> When you click OK, the new fields will be appended and filled in >> with the right values. >> >> You can then access them in the layer's Attribute Table. >> >> With those 2 extra fields you essentially have access to everything >> that was recorded in the GPX file. >> >> You can also use Field Calculator to add more fields and populate >> them with calculation results. >> >> As an aside, Field Calculator cannot create new fields in the GPX >> file; instead it creates them as temporary virtual fields. >> >> A better approach is to first save the data in a shape file >> right-click on layer, choose Export > Save selected features >> then open that file instead of the original GPX. >> Field Calculator will add new fields to that format. >> >> Cordially, >> -- >> Garth Fletcher >> _______________________________________________ >> Qgis-user mailing list >> [email protected] >> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user > >
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