QGIS - Spatial Join & Thematic
Channel: GIS Coordinated
Date: 2022-02-07

Video #120b

In this video I demonstrate several tools - hence it being a bit longer than the others.
I have a number of points in London, on top of some A Roads and I wanted to take the road name/code and join that to my points layer.  So basically a spatial attribute join.
* A 50m buffer is created around the A Roads
* Then a Join Attributes by Location is executed - selecting only the road_no attribute to bring across
* The number of points than fall within each buffer are counted and a thematic view of the layer is generated using the new NUMPOINTS attribute as the classification.

QGIS default tools used are:
Buffer (under Vector: GeoProcessing Tools)
Join Attributes by Location (under Vector: Data Management Tools)
Count Points in Polygon (under Vector: Analysis Tools)

Updated new video (no. 164) on just the Join Attributes by Location feature