[Qgis-user] how to edit .gpx

[Gerardo Jimenez]

Easy GPS won't do what you want. In qgis you will loose all the info you want. A way around this is to use GPS BABel, (free also). You want it it read your gpx and produce a "universal csv with field structure on the first line" file. Remember to assign the csv extension. If you load the csv file in your spreadsheet you will have the coordinates for each point of the track, and for those saved, you will have the time and date stamps. You can edit them in the spreadsheet or load it in q gis with the "add delimited text layer plugin. You will have points and after that you can create a line layer set the proper snapping options and trace the line you want.
It is just an idea..hope it helps



Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510
Mexico City
Mexico

56 22 95 16

From: m.e.dodd at open.ac.uk
To: gejst5 at hotmail.com
Date: Wed, 26 Oct 2011 15:46:45 +0100
Subject: RE: [Qgis-user] how to edit .gpx



Thanks.  What I actually want to do is delete several hundred points from a track to clean it up when the gps lost its signal for a while and zigzagged about etc, the points to be deleted are rather scatted along the track so its not possible other than graphically on screen with a georeferenced background.  I had previously tried this editing several times in qgis (with suitable google background) using kml and shapefile formats after converting from gpx but in each case some of the information such as date/time was lost from the resulting kml or shapefile. From: Gerardo Jimenez [mailto:gejst5 at hotmail.com] 
Sent: 26 October 2011 14:37
To: qgis-user at lists.osgeo.org
Subject: RE: [Qgis-user] how to edit .gpx The add button (plus icon) allows you to insert new waypoints. The route icon allows you to define a route based on way points. You can select a way point , track or route on the screen or in the list that appears on the left side.  You cans select either a waypoint, a route or track and delete them. You can select a way point and edit its coordinates. Once your edits are finished you can save them as the same or new gpx. Having that gpx you can: 

a) Load it to your gps unit.

b)load it in to QGIS and save either the routes, tracks or way points as shape files. Once they are a shape fiel you can edit them. To edit a shape just select it and togle to edit mode  (ble pen icon) which allows you to move nodes, create new nodes or points. That depend on what exactly what you want to do.

Hope it helps


Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510 Mexico City
Mexico 56 22 95 16From: m.e.dodd at open.ac.uk
To: gejst5 at hotmail.com
Date: Wed, 26 Oct 2011 09:21:19 +0100
Subject: RE: [Qgis-user] how to edit .gpxNot really sure how this helps as I don’t seem to be able to edit the .gpx file in this program either. From: Gerardo Jimenez [mailto:gejst5 at hotmail.com] 
Sent: 26 October 2011 02:27
To: qgis-user at lists.osgeo.org
Subject: RE: [Qgis-user] how to edit .gpx You can try and ouside solution, also free, try EasyGPX. You can make your own list of waypoints and routes etc.  
Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510 Mexico City
Mexico 56 22 95 16> Date: Tue, 25 Oct 2011 22:40:27 +0300
> Subject: Re: [Qgis-user] how to edit .gpx
> From: lauri.kajan at gmail.com
> To: m.e.dodd at open.ac.uk
> CC: qgis-user at lists.osgeo.org
> 
> Hi,
> 
> This is a known limitation. You can delete and add objects but not
> edit existing one.
> See a bug report for more information: http://hub.qgis.org/issues/2219
> 
> -Lauri
> 
> On Tue, Oct 25, 2011 at 10:14 PM, M.E.Dodd <m.e.dodd at open.ac.uk> wrote:
> > Can load a .gpx but can't seem to edit it, the editing button stays greyed out (qgis 1.7).  can save to .kml or shapefile and do edits but then loose some info from the original .gpx
> > looking at posts it seems that editing gpx has been in qgis for some time but i can't see how to do it.
> >
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