search for: ligthblu

...pch=20) points(ds1[inout(ds1,ds1.poly),], col="black", pch=20) points(ds1[!inout(ds1,ds1.poly),], col="red", pch=20) If points lay on the polygon-line, inout() tells sometimes they are inside (black points), sometimes outside (red points) of the surrounded (here ligthblue) area. Same with another dataset, testing against the given polygon. Points inside are shown in green, outside in orange color. Some of the orange points must be green points? Is my understanding of function inout() correct? I am looking for a function, that gives all points inside the area, inc...