Extract state from coordinates — states_from

Extracts the state for each occurrence record based on coordinates.

Usage

states_from_coords(
  occ,
  long = "decimalLongitude",
  lat = "decimalLatitude",
  from = "all",
  state_column = "stateProvince",
  output_column = "state_xy",
  append_source = FALSE
)

Arguments

occ: (data.frame) a dataset with occurrence records, preferably standardized using format_columns().
long: (character) column name with longitude. Default is 'decimalLongitude'.
lat: (character) column name with latitude. Default is 'decimalLatitude'.
from: (character) whether to extract the state for all records ('all') or only for records missing state information ('na_only'). If 'na_only', you must provide the name of the column with state information. Default is 'all'.
state_column: (character) the column name containing the state. Only applicable if from = na_only. Default is NULL.
output_column: (character) column name created in occ to store the states extracted. Default is 'state_xy'.
append_source: (logical) whether to create a new column in occ called 'state_source', which indicates whether the state was derived from coordinates. Default is FALSE.

Value

The original occ data.frame with an additional column containing the states extracted from coordinates.

Details

The states are extracted from coordinates using a map retrieved from rnaturalearthdata::states50.

Examples

# Import and standardize GBIF
data("occ_gbif", package = "RuHere") #Import data example
gbif_standardized <- format_columns(occ_gbif, metadata = "gbif")
gbif_states <- states_from_coords(occ = gbif_standardized)