Astragalus              Astragalus and Sesleria Plants
centroidiam             Compute Centroids and Diameters
check.ventana           Checks for Anticlockwise Vertices
pval                    P Value for a Monte Carlo Test of Polygon
                        Overlapping
rotawin                 Rotate Individual Polygons
test.intersection       Test Overlapping of Polygons Against Random
                        Rotation
