Add Collection to Polygon

Adds collection to a polygon such as a watershed. If the active sfc polygon column is called geometry it is replaced by the geometry column of the collection. If the collection includes a blue_line_key column the values are copied to column blk replacing any existing values.

fwa_add_collection_to_polygon(
  x,
  collection = "stream_network",
  intersect = FALSE,
  filter = NULL,
  limit = 10000,
  offset = 0,
  properties = NULL,
  transform = NULL,
  epsg = getOption("fwa.epsg", 3005),
  nocache = getOption("fwa.nocache", FALSE)
)

fwa_add_collection_to_watershed(
  x,
  collection = "stream_network",
  intersect = FALSE,
  filter = NULL,
  limit = 10000,
  offset = 0,
  properties = NULL,
  transform = NULL,
  epsg = getOption("fwa.epsg", 3005),
  nocache = getOption("fwa.nocache", FALSE)
)

Arguments

x

A sf object with an active sfc polygon column.

collection

A character string of the collection.

intersect

A logical vector specifying whether to intersect the individual features with the polygon as opposed to just including the features that intersect it.

filter

A named vector or list of the filter(s) to apply, where the list names correspond to column names and the list values correspond to the desired value, e.g. list(gnis_name = "Sangan River").

limit

A positive whole number indicating the maximum number of features to return.

offset

A positive whole number indicating the offset of start of returned results.

properties

A vector of strings of the column names to include. If NULL (default), all columns are retained.

transform

A character vector with the name of the valid transform function followed by the parameter values (e.g. c("ST_Simplify", 100))

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 object

Functions

• fwa_add_collection_to_watershed():

  Deprecated for fwa_add_collection_to_polygon().

See also

fwa_collection.

Examples

if (FALSE) {
watershed <- fwa_add_watershed_to_blk(data.frame(blk = 356308001))
fwa_add_collection_to_polygon(watershed)
}