Talk:Spatial relation

Remember to see Talk:Spatial_relation/point-point, etc.

Examples

 * http://wtlab.iis.u-tokyo.ac.jp/~wataru/lecture/rsgis/giswb/vol1/cp2/cp2-4.htm
 * https://developers.arcgis.com/ios/objective-c/guide/geometry-operations.htm
 * valid point-point: Contains, Disjoint, Overlaps, Within.
 * valid point-line: Disjoint, Touches, Within.
 * valid point-area: Disjoint, Touches, Within.
 * http://edndoc.esri.com/arcsde/9.0/general_topics/understand_spatial_relations.htm
 * http://edndoc.esri.com/arcsde/9.0/general_topics/understand_spatial_relations.htm