To answer this question, we need to perform a buffer on the pipeline and then select the points in the popp layer that fall inside this buffer. This is a common GIS query, and the method shown here should be applicable to any similar query you might have about your data. Load the popp layer into the map.
Search in the Processing Toolbox for Buffer. Double-click to open the tool. Select the pipelines layer and set the buffer Distance to 15000 feet. Check the box next to Dissolve result; this will merge any adjacent or overlapping features into one feature. For the output, choose the GeoPackage that we supplied with this book containing this alaska layers. The Buffer dialog ...
