Map algebra

Map algebra is a set of techniques used to analyze and manipulate spatial data represented in map form. It involves combining, comparing, and modifying different layers of geographic information—such as land use, elevation, or population—using mathematical operations. For example, overlaying population data with flood risk maps can help identify vulnerable areas. Think of it as performing calculations on various map layers to gain insights or make decisions about real-world features, similar to how you might combine and analyze data in a spreadsheet, but applied spatially across geographic regions.