Anoverlayisaclearsheetofplasticorsemi-transparentpaper.Itisusedtodispl - PPT Presentation
Figure1Toydatapointsadandoverlappingpolygonsx1x5b125c1245d14andtheappropriatepointsfallinginanyofthepolygonsareselectedbyptspolSpatialPointsxyb0505c1005d1505CoordinateRef ID: 301057
Figure1:Toydata:points(a-d)