Perform spatial temporal analysis of moving polygons; a longstanding analysis problem in Geographic Information Systems. Facilitates directional analysis, shape analysis, and some other simple functionality for examining spatial-temporal patterns of moving polygons.
03-10-2014 - Changed names of STAMP event types to all be minimum 4 charachters e.g., STBL. - Fixed problem when T1 (T2) poly contains T2 (T1) poly. - Added argument 'drop_lower_td=TRUE' to calls to gIntersection and gDifference.
13-05-2014 - Changed FRAC, SHPI shape indexes to proper vector formulae.
13-12-2016 - Upgrade for JSS submissiona and CRAN. Documentation fixes.