[GIS] QGIS – select or export point attributes by polygon feature

Question

I have two layers, one polygons of boundaries (similar to say local government areas) and a point layer of hospitals. I want to select all of the hospitals within a particular area (ie a particular polygon attribute). This could be to a new shapefile but the next step is I want to export a list.

I know how to export attribute features to CSV but how do I select only the points within one boundary area?

Answer 1

If the both layers have the same projection, you can use Join Attribute by location from Vector -> Data Management Tool -> Join Attributes by location. Try to use "Take attributes of first located feature" as shown below:

• Target vector layer is the point layer (hospitals)
• Join vector layer is the polygon layer

Then save the out data as shapefile. You can them export the output shapefile as CSV by Right-click the layer in the table of contents -> Save as -> Choose CSV from the Format list.