uses the Network Linked Data Index to retrieve and estimated network location for the given point. If not within a grid cell of a flowline, will use a raindrop trace service to find the nearest downslope flowline location.
get_nldi_index(location)Arguments
- location
numeric WGS84 lon/lat pair (X, Y)
Examples
# \donttest{
index <- get_nldi_index(c(-89.276, 42.988))
if(inherits(index, "sf")) {
plot_nhdplus(bbox = sf::st_bbox(sf::st_buffer(index[1,], units::set_units(1000, "m"))))
plot(sf::st_geometry(sf::st_transform(index, 3857)), add = TRUE)
}
#> Spherical geometry (s2) switched off
#> although coordinates are longitude/latitude, st_intersects assumes that they
#> are planar
#> Spherical geometry (s2) switched on
#> Zoom set to: 12
# }