What is the function of 'symbology' in GIS?

The function of 'symbology' in GIS is fundamentally about visually representing data on maps. This involves the use of symbols, colors, and styles to depict different types of information, making it easier for users to interpret spatial data. By using various colors and symbols, GIS practitioners can convey critical information about the characteristics of geographic features, such as land use types, population density, or environmental conditions, enabling quick understanding and analysis.

Symbology enhances the map's effectiveness as a communication tool, allowing for better visualization of patterns, relationships, and trends within the data. For instance, a color gradient might show elevation changes, while different icon shapes could represent various types of infrastructure. Overall, the goal of symbology is to simplify complex data and present it in an accessible way for decision-making, analysis, and understanding.