[Qgis-user] Adding coordinates to layer

[Ludwig Kniprath]

Hi Pat,


Step 1 (already done): import csv as "Delimited Text Layer". Since there 
are no coordinates this results in a geometry-less layer.

Step 2: export and load the just imported csv as vector-layer 
(GeoPackage, Shape), geometry-type "Point", desired projection. This 
results in a Point-Layer with the same features and attributes as the 
csv but still without valid geometries.

Step 3: Update the empty geometries with valid points. Sadly there is a 
lack in QGis, edit existing geometries => OK, creating new features with 
geometries => OK,  update geometries in geometry-less features => not 
supported out-of-the-box.

So I (not Anthropic Claude 😉) wrote a script, attached as python file.

Operating instructions:

1: Load script into python console

2: activate the exported vector-layer from step 2

3. run the script

4. open attribute-table

5. select the desired feature in table

6. digitize the point-geometry for the selected feature by click on map

7. repeat steps 5 and 6 as often as you like

8. stop and save edits

Afterwards the features have valid geometries and can be edited with 
QGis on-board tools

Note:

The script does not write coordinates to the attribute-table but creates 
point-geometries. You can afterwards extract x- and y-coordinates into 
according fields by QGis-Field-Calculator.

hth

Ludwig

Am 02.12.24 um 14:08 schrieb Pat Brown via QGIS-User:
> Hi
>   I have a csv file with data about various mines. It includes 
> descriptions of locality  but no coordinates. I have added this file 
> to qgis and created a shapefile. I now want to add the coordinates of 
> each mine by searching for its locality on a basemap in qgis then 
> clicking on the map to add the coordinates to the shapefile attribute 
> table.  Is this possible or do I have to search for each location on 
> Google Earth, for example, then write out the coordinates and add them 
> to the attribute table manually?
>
> Thanks
>
> Paddy
>
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