Levels of GIS data analysis can be:
1. Attribute data analysis
Attribute data query; Data in attribute table are search or sorted for presentation in
reports or further use. Arithmetic, Boolean, and statistical operations are
performed in attribute tables
2. Spatial data analysis Operations are performed on spatial (vector and raster) data
base on geographic relationships
2.1 Feature base individual in layer, e.g. buffer, centroid (mean center of feature)
2.2 Layer base between layer, e.g. overlay operation (union, clip)
3. Spatial (geometry) and attribute data analysis (integrated spatial and attribute)
3.1 Compile new sets of data based on original and derived attributes
3.2 Compile new sets of data based on geographic relationships in their layer or