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Get number of points

Source: R/generics.R, R/accessors.R
st_npoints.Rd

Returns the number of points in a geometry.

Usage

st_npoints(x, ...)

# S4 method for class 'dbSpatial'
st_npoints(x, ...)

Arguments

x

dbSpatial object

...

additional arguments

Value

dbSpatial object with npoints column

Methods (by class)

  • st_npoints(dbSpatial): Method for dbSpatial objects

See also

Other accessors: st_x(), st_y()

Examples

# \donttest{
if (interactive() && requireNamespace("duckdb", quietly = TRUE)) {
  line <- sf::st_sf(
    id = 1,
    geom = sf::st_sfc(sf::st_linestring(rbind(c(0, 0), c(1, 1), c(2, 1))))
  )
  duckdb_conn <- DBI::dbConnect(duckdb::duckdb(), ":memory:")
  DBI::dbExecute(duckdb_conn, "SET threads = 1")
  x <- as_dbSpatial(line, conn = duckdb_conn, name = "line",
                    overwrite = TRUE)
  st_npoints(x)
  DBI::dbDisconnect(duckdb_conn, shutdown = TRUE)
}
# }