I'm trying to join a point layer to a polygon layer to get a specific field in the attribute table into the polygon layer. I want the polygon layer "Zone" to have the field "Improved" from the point layer "Permits". Is there a way to join based on location? All the points in "Permits" are located within the respective polygons in "zone". I've tried performing a Join Attributes by location" but the fields in the new layer end up being blank.
[GIS] Empty fields after joining attributes by location to join point to polygon layer
attribute-joinsqgistable
Related Solutions
Using "Distance Matrix" you can calculate the nearest point. Make sure that both layers are in the same CRS! Then, you can load the results and use them to join table A and B.
In "Distance matrix" chose: "Linear distance matrix" and "use only the nearest k target points: 1"
Load the CSV using "Add Vector Layer" and join the layers in Layer A's layer properties - join tab.
And the result:
I don't have time to try this out, but in my head it might work...if you have a unique ID for each grid square, and get that ID into a field on each point, then you should be able to get all the statistics you want by using the GroupStats QGIS plugin on the point layer, grouping by the ID. (then save that, join back to the grid and you're in business) Maybe there's something easier still...
Best Answer
To join attribute from one layer to another you can click the Join attribute by location tool under the Vector tab. This will open the tool screen. Choose the Target layer which is the one you want to add data to ie Zone and the Join layer which is the layer with data you want to transfer Permits. Depending on the version of qgis you use it might be slightly different. I am running QGIS 2.18.3. Then you need to choose a Geometric predicate (not sure the exact option) you can try out one of the different options from intersect, touches, overlap or crosses. And then choose the take attribute of first located feature. Check and choose any other appropriate options form the menu and save to choice location