HI Jan. What is happening is that the coords in the shape file that you can see in the attributes table are just copies of the actual coords used to display the data.
It is simple to update these coords from the underlying data. In qgis, 1. open the attribute table for your shapefile. 2. Make it editable. 3. select the field calc button (looks like an abacus) 4. check the "update existing field" box 5. choose your longitude or easting field that you want updated in the dropdown below. 6. in the functions box select geometry - $x and double click . it will appear in the expression box. 7. hit ok - warning this will overwrite the whole field with the latitude /easting depending on what you have you coordinate system set to. Check that this is what you wanted and do the same for latitude/northing using $y. It sounds tricky, but is a very simple and quick process once you get the hang of it. I am not sure if IGIS records the elevation, so this might be slightly more difficult to do. Cheers Damien -----Original Message----- From: Qgis-user [mailto:qgis-user-boun...@lists.osgeo.org] On Behalf Of Jan Becket Sent: Saturday, 17 October 2015 8:21 AM To: qgis-user@lists.osgeo.org Subject: [Qgis-user] iGIS point shapefiles - exporting back to QGIS Hello, Many thanks to those who recommended the iPhone app iGIS a few weeks ago to as a way to send points to and from an iPhone in a format QGIS can edit. Except for one issue, that workflow works well. The iGIS app imports QGIS point shapefiles without any problem. However, when I export a shapefile layer back to QGIS (via Dropbox), the lat/long coordinates and the altitude of points I have made since the import all register as “NULL” values in the QGIS attribute table. This is odd, since the points themselves show up on the map exactly where they are supposed to be. Furthermore, when I select the rows containing the new points, copy them and then paste them into the text edit simple word processor, the lat / long coordinates suddenly appear. Since the whole point of using shapefiles is to have an editable point layer within QGIS, this somewhat defeats the purpose. I hope I am missing some simple step in the shapefile export / import process or missing a critical plugin. Thanks for any suggestions! Any possibility of editable GPX layers in future QGIS releases? Jan Becket Honolulu _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
