The language behind raster analysis Map algebra is a conceptual language designed specifically for cell-based geographic information systems. It provides the theoretical foundation for cartographic modeling, that is, using maps not just to display data, but to analyze and derive new spatial information. The idea of map algebra comes from work originally presented by Joe… Continue reading
Posts Tagged → Spatial Data
The Hidden Bias in Maps
Learning the Modifiable Spatial Unit Problem (MAUP) Have you ever noticed how the way we draw boundaries on a map can totally change the story the data tells? Think about it: if we look at average income by State, we might see big differences county by county… But if we zoom in and look at… Continue reading
Cartographic Principles, Classification and Symbology
Cartography is the art and science of making maps, and in the context of geographic information systems (GIS) it is a critical step in turning data into information people can actually use. Maps are not just pictures of geography—they are carefully designed tools that help us navigate, see patterns, understand relationships, and share knowledge about… Continue reading
Most Requested Geospatial Data
This site provides links to the most commonly requested geospatial datasets from some of the classes I teach. I also use some of this data myself, so in certain cases, I’ve included short videos to help guide you through data management or integrating the data into GIS.
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