Summary
In this chapter, you saw the value of spatial queries when comparing different datasets consisting of polygons or multipolygons. You uploaded vector and raster data into the database and were introduced to additional QGIS plugins. The ability to access data resources and import them using terminal helped create raster functions and explore the process of creating polygons out of rasters.
In this book, you have been introduced to SQL and geospatial analysis using PostGIS and QGIS as helpful tools in processing both vector geometries and raster data. I recommend exploring additional datasets and adding different functions to your query language skills.
I thank you for the time and attention along the way and wish you luck on your continued spatial journey.