Add Watershed to Blue Line Key — fwa_add_watershed_to_blk • fwatlasbc

Adds polygon (geometry) of aggregated fundamental watersheds to blue line key (blk). The rm distances which is in meters is from the river mouth.

Usage

fwa_add_watershed_to_blk(
  x,
  exclude = FALSE,
  epsg = getOption("fwa.epsg", 3005),
  nocache = getOption("fwa.nocache", FALSE)
)

Arguments

x: An sf object with a polygon sfc column specifying watersheds and an optional rm column specfying the river meter. The rm is set to be 0 if missing.
exclude: A logical vector specifying whether to exclude the fundamental watershed in which the start falls.
epsg: A positive whole number of the epsg to transform features to.
nocache: A flag specifying whether or not to cache results.

Value

An sf tibble with the columns of x plus sf column geometry.

A sf object

See also

fwapgr::fwa_watershed_at_measure().

Examples

if (FALSE) { # \dontrun{
fwa_add_watershed_to_blk(data.frame(blk = 356308001))
} # }