[GIS] 1.Spatial dependence 2. Interdependence(correlation) of errors at different points in space; 3. Statistical correlation between spatial random variables of the same type, attribute, name, and so on, where the correlation depends on the distance and/or direction that separates the locations. Compare to crosscorrelation. Note: strong negative correlation will lead to large errors in distance; independence of errors leading to moderate errors in distance; strong positive correlation leading to no errors in distance. eg: If an entire field is planted with a single crop, such as barley, then only one point needs to be observed to determine the crop of the entire field.
