Takes lines and removes the start and end point, to a distance determined by the user.
geo_toptail(l, toptail_dist, ...)
Arguments
| l | A SpatialLines object |
|---|---|
| toptail_dist | The distance (in metres) to top and tail the line by. Can either be a single value or a vector of the same length as the SpatialLines object. |
| ... | Arguments passed to rgeos::gBuffer() |
Details
Note: toptailgs() is around 10 times faster, but only works
on data with geographic CRS's due to its reliance on the geosphere
package.
See also
Other lines:
angle_diff(),
is_linepoint(),
line2df(),
line2points(),
line_bearing(),
line_breakup(),
line_match(),
line_midpoint(),
line_sample(),
line_segment(),
line_via(),
mats2line(),
n_sample_length(),
n_vertices(),
onewaygeo(),
points2line(),
toptail_buff(),
toptailgs(),
update_line_geometry()
Examples
#> GEOS GDAL proj.4 GDAL_with_GEOS USE_PROJ_H #> "3.8.0" "3.0.4" "7.0.0" "true" "true"# dont test due to issues with sp classes on some set-ups if(lib_versions[3] >= "6.3.1") { # l <- routes_fast[2:4, ] # to run with sp classes l <- routes_fast_sf[2:4, ] l_top_tail <- geo_toptail(l, 300) l_top_tail plot(sf::st_geometry(l_top_tail)) plot(sf::st_geometry(geo_toptail(l, 600)), lwd = 9, add = TRUE) }
