ebirdst (version 3.2022.3)

load_ranges: Load seasonal eBird Status and Trends range polygons

Description

Range polygons are defined as the boundaries of non-zero seasonal relative abundance estimates, which are then (optionally) smoothed to produce more aesthetically pleasing polygons using the smoothr package.

Usage

load_ranges(
  species,
  resolution = c("9km", "27km"),
  smoothed = TRUE,
  path = ebirdst_data_dir()
)

Value

An sf update containing the seasonal range boundaries, with each season provided as a different feature.

Arguments

species

character; the species to load data for, given as a scientific name, common name or six-letter species code (e.g. "woothr"). The full list of valid species is in the ebirdst_runs data frame included in this package. To download the example dataset, use "yebsap-example".

resolution

character; the raster resolution from which the range polygons were derived.

smoothed

logical; whether smoothed or unsmoothed ranges should be loaded.

path

character; directory to download the data to. All downloaded files will be placed in a sub-directory of this directory named for the data version year, e.g. "2020" for the 2020 Status Data Products. Each species' data package will then appear in a directory named with the eBird species code. Defaults to a persistent data directory, which can be found by calling ebirdst_data_dir().

Examples

if (FALSE) {
# download example data if hasn't already been downloaded
ebirdst_download_status("yebsap-example")

# load smoothed ranges
# note that only 27 km data are provided for the example data
ranges <- load_ranges("yebsap-example", resolution = "27km")
}