View source: R/get_hydro_location.R
get_hydro_location | R Documentation |
given a flowline index, returns the hydrologic location (point) along the specific linear element referenced by the index.
get_hydro_location(indexes, flowpath)
indexes |
data.frame as output from index_points_to_lines. |
flowpath |
data.frame with three columns: id, frommeas, and tomeas as well as geometry. |
sfc_POINT simple feature geometry list of length nrow(indexes)
if(require(nhdplusTools)) {
source(system.file("extdata", "sample_flines.R", package = "nhdplusTools"))
indexes <- index_points_to_lines(sample_flines,
sf::st_sfc(sf::st_sfc(list(sf::st_point(c(-76.86934, 39.49328)),
sf::st_point(c(-76.91711, 39.40884)),
sf::st_point(c(-76.88081, 39.36354))),
crs = 4326)))
get_hydro_location(indexes, sample_flines)
}
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.