QGIS provides powerful spatial and aspatial query tools that allow for the easy creation of data subsets. In this section, a series of spatial and aspatial queries will be used to determine which elementary schools are within the Southeast Uplift Neighborhood Coalition (SEUL) and Southwest Neighborhoods Inc. (SWNI) coalitions in Portland, Oregon. This example uses the
schools.shp sample data.
First, we will select the SEUL and SWNI coalition neighborhoods from
Neighborhoods_pdx.shp. To do this, perform the following steps:
Neighborhoods_pdx. Click on the Select features using an expression button () to open the Select by expression window. This window is ...