Count the number of points in a geometry

Count the number of points in a geometry

st_numpoints(.geom)

st_npoints(.geom)

Arguments

.geom	A geometry object.

See also

Other make: st_makeline, st_makepoint, st_multi

Examples

library(tibble)
library(dplyr)

tibble(x = 1:2, y = 3:4) %>%
  mutate(geom = st_makepoint(x, y), n = st_npoints(geom)) %>%
  summarise(line = st_makeline(geom), n = st_numpoints(line))
#> # A tibble: 1 x 2
#>           line     n
#>   <LINESTRING> <int>
#> 1   (1 3, 2 4)     2