addMValues              Add M values to given feature
bct                     Boundary Convexity Tool
latlongShpObject        An example sf object outlining boundaries of a
                        group of islands in Alaska in the lat/lon CRS.
pointObject             An example sf object with geometry type of
                        POINT, used for testing.
polygonShpObject        An example sf object outlining boundaries of a
                        group of islands in Alaska cast as POLYGON.
shpObject               An example sf object outlining boundaries of a
                        group of islands in Alaska cast as LINESTRING.
