sf (version 0.5-5)

valid: Make an invalid geometry valid

Description

Make an invalid geometry valid

Usage

st_make_valid(x)

Arguments

x

object of class sfg, sfg or sf

Value

Object of the same class as x

Details

st_make_valid uses the lwgeom_makevalid method also used by the PostGIS command ST_makevalid. It is only available if the package was linked against liblwgeom, which is currently not the case for the binary CRAN distributions; see the package source code repository for instructions how to install liblwgeom. The example below shows how to run-time check the availability of liblwgeom.

Examples

# NOT RUN {
x = st_sfc(st_polygon(list(rbind(c(0,0),c(0.5,0),c(0.5,0.5),c(0.5,0),c(1,0),c(1,1),c(0,1),c(0,0)))))
if (!is.na(sf_extSoftVersion()["lwgeom"])) {
  suppressWarnings(st_is_valid(x))
  y = st_make_valid(x)
  st_is_valid(y)
  y %>% st_cast()
}
# }