Note that geos_x()
, geos_y()
, and geos_z()
do not handle
empty points (use geos_write_xy()
if you need to handle this case).
Similarly, the min/max functions will error on empty geometries.
geos_area(geom) geos_length(geom) geos_x(geom) geos_y(geom) geos_z(geom) geos_xmin(geom) geos_ymin(geom) geos_xmax(geom) geos_ymax(geom) geos_minimum_clearance(geom) geos_is_empty(geom) geos_is_simple(geom) geos_is_ring(geom) geos_has_z(geom) geos_is_closed(geom) geos_type_id(geom) geos_type(geom) geos_precision(geom) geos_srid(geom) geos_num_coordinates(geom) geos_num_geometries(geom) geos_num_interior_rings(geom) geos_num_rings(geom) geos_dimension(geom) geos_coordinate_dimension(geom) geos_is_clockwise(geom)
geom |
---|
A vector of length geom
geos_area("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))") #> [1] 100 geos_length("POLYGON ((0 0, 10 0, 10 10, 0 10, 0 0))") #> [1] 40 geos_x("POINT Z (1 2 3)") #> [1] 1 geos_y("POINT Z (1 2 3)") #> [1] 2 geos_z("POINT Z (1 2 3)") #> [1] 3 geos_xmin("LINESTRING (0 1, 2 3)") #> [1] 0 geos_ymin("LINESTRING (0 1, 2 3)") #> [1] 1 geos_xmax("LINESTRING (0 1, 2 3)") #> [1] 2 geos_ymax("LINESTRING (0 1, 2 3)") #> [1] 3 geos_minimum_clearance("POLYGON ((0 0, 10 0, 10 10, 3 5, 0 10, 0 0))") #> [1] 3 geos_is_empty(c("POINT EMPTY", "POINT (0 1)")) #> [1] TRUE FALSE geos_is_simple(c("LINESTRING (0 0, 1 1)", "LINESTRING (0 0, 1 1, 1 0, 0 1)")) #> [1] TRUE FALSE geos_is_ring( c( "LINESTRING (0 0, 1 0, 1 1, 0 1, 0 0)", "LINESTRING (0 0, 1 0, 1 1, 0 1)" ) ) #> [1] TRUE FALSE geos_is_closed( c( "LINESTRING (0 0, 1 0, 1 1, 0 1, 0 0)", "LINESTRING (0 0, 1 0, 1 1, 0 1)" ) ) #> [1] TRUE FALSE geos_has_z(c("POINT Z (1 2 3)", "POINT (1 2)")) #> [1] TRUE FALSE geos_type_id(c("POINT (0 0)", "LINESTRING (0 0, 1 1)")) #> [1] 1 2 geos_srid(wk::as_wkb(c("SRID=1234;POINT (0 0)", "POINT (0 0)"))) #> [1] 1234 0 geos_num_coordinates(c("POINT (0 0)", "MULTIPOINT (0 0, 1 1)")) #> [1] 1 2 geos_num_geometries(c("POINT (0 0)", "MULTIPOINT (0 0, 1 1)")) #> [1] 1 2 geos_num_interior_rings("POLYGON ((0 0, 1 0, 1 1, 0 1, 0 0))") #> [1] 0 geos_dimension(c("POINT (0 0)", "LINESTRING (0 0, 1 1)")) #> [1] 0 1 geos_coordinate_dimension(c("POINT (0 0)", "POINT Z (0 0 1)")) #> [1] 2 3