Geo-referenced Data

Data that is associated with specific geographic locations or regions, such as population statistics by county, crime rates by neighbourhood, or election results by district. Geo-referenced data is typically presented on maps using visual encodings like colour gradients, which creates significant accessibility barriers for blind and vision-impaired users. Accessible alternatives include sonification (mapping data values to sound), tactile maps, and table-based presentations, though these must be carefully designed to preserve the spatial relationships that give geographic data its analytical value.