I need to perform a stratified sample in the following context.
I have two layers; the first is a point layer (which consists of dwelling centroids.) The second is a vector layer of polygons with each polygon being an electoral area. There are multiple dwelling points contained within one electoral area. The dwelling point layer has all the inherited information from the electoral area layer.
I need to select 20 points from each of the five electoral areas.
How do I best do this in QGIS? I have tried all of the vector tools. - Am I missing something?