GeoDa

GeoDa is a free and open-source software package for exploratory spatial data analysis. Developed by the GeoDa Center for Geospatial Studies at Arizona State University, it provides a user-friendly interface for visualizing and analyzing spatial patterns and relationships in data. GeoDa supports a wide range of spatial data formats, including shapefiles and geodatabases.

Key functionalities of GeoDa include the creation of various thematic maps, such as choropleth maps and proportional symbol maps, to represent geographic variations. It also offers tools for spatial autocorrelation analysis, such as Moran's I and Geary's C, to detect clustering or dispersion of values across space. Furthermore, GeoDa includes spatial regression models, like spatial lag and spatial error models, which can account for spatial dependencies in statistical analysis. The software facilitates interactive linking between maps and tables, allowing users to select features on the map and see corresponding data in the table, and vice versa. This interconnectedness is crucial for identifying outliers and understanding local spatial patterns. GeoDa is widely used in academic research, urban planning, public health, and environmental studies for its capabilities in uncovering spatial insights.