I have three layers (one polygon, two point), and from the polygon layer I'm trying to select any polygons that contain points from both of the points layer. It seems like a simple Select by Location process, but that only allows for one comparison layer, so I'm not sure how to go about it.
QGIS – Selecting Polygons Containing Points from Multiple Layers
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Related Solutions
I've got the same task with polygons' and points' layers (most of points are snapped to polygons, so I have to be precise).
I assume, the best way to solve this task is by transfering all layers to the polygon type:
- Create a special field in both (or more) layers which would help you to recognize which layer each feature is from. Make sure your 'polygon' layer has all the fields which are in others (in my case 'points') layers. It prevents you to lose data.
- Create buffer around your 'points' layer.
- Copy created objects to the 'polygons' layer. You have to make sure you can recognize "external" features. In my case, they have the code '1'.
- Move all the items.
- Select features from your 'polygons' layer, which has the appropriate layer code (in my case '1').
- Create centroids from selected features.
- Replace your points from 'points' layer with new created ones. Points remain snapped.
Still not perfect, but way better :)
It's also possible to do the same with the lines' layer
instead using Select by location try to use the Spatial Query core plugin.
Go in the plugin menu and activate it if you cannot see it. Spatial query is available in the Vector menu.
In the dialog window select your grid layer as source layer and the point layer as the reference layer:
and this is the result:
I hope this can help you!
Related Question
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Best Answer
You can use Select by Expression. Simply replace the names of your pointlayers: