Find the mid-point of lines
Arguments
- l
A spatial lines object
- tolerance
The tolerance used to break lines at verteces. See
lwgeom::st_linesubstring().
See also
Other lines:
angle_diff(),
geo_toptail(),
is_linepoint(),
line2df(),
line2points(),
line_bearing(),
line_breakup(),
line_segment1(),
line_segment(),
line_via(),
mats2line(),
n_segments(),
n_vertices(),
onewaygeo(),
points2line(),
toptail_buff()
Examples
l <- routes_fast_sf[2:5, ]
plot(l$geometry, col = 2:5)
midpoints <- line_midpoint(l)
#> Warning: st_linesubstring does not follow a geodesic; you may want to use st_geod_segmentize first
#> Warning: st_linesubstring does not follow a geodesic; you may want to use st_geod_segmentize first
plot(midpoints, add = TRUE)
# compare with sf::st_point_on_surface:
midpoints2 <- sf::st_point_on_surface(l)
#> Warning: st_point_on_surface assumes attributes are constant over geometries
#> Warning: st_point_on_surface may not give correct results for longitude/latitude data
plot(midpoints2, add = TRUE, col = "red")
#> Warning: ignoring all but the first attribute
