generate_occ_uncertain: Random latitude and longitude coordinates accounting...

In occUncertain: Addressing Occurrence Point Uncertainty When Calculating Spatial Metrics

Random latitude and longitude coordinates accounting uncertainty values

Description

generate_occ_uncertain Given a data frame of georeferenced occurrences this function generates a new set of coordinates with added uncertainty.

Usage

generate_occ_uncertain(
  occs_df,
  lat_col = "latitude",
  lon_col = "longitude",
  lat_uncertainty = "latitude_uncertainty",
  lon_uncertainty = "longitude_uncertainty",
  taxa_col = "species"
)

Arguments

occs_df	A data.frame of occurrence locations that includes at least these four columns - latitude, longitude, latitude uncertainty and longitude uncertainty in degrees.
lat_col	Name of column of latitude dbl values. Caps sensitive.
lon_col	Name of column of longitude dbl values. Caps sensitive.
lat_uncertainty	Name of column of latitude uncertainty in degree values. Caps sensitive.
lon_uncertainty	Name of column of longitude uncertainty in degree values. Caps sensitive.
taxa_col	Name of column of taxa (species) values. Caps sensitive.

Details

Input as a dataframe should have the following structure:

[,1]	ddlat	numeric, latitude (in decimal degrees)
[,2]	ddlon	numeric, longitude (in decimal degrees)
[,3]	ddlat unc	numeric, longitude uncertainty (in decimal degrees)
[,4]	ddlon unc	numeric, longitude uncertainty (in decimal degrees)
[,5]	tax	character or factor, taxa names

It is mandatory to respect field positions, but field names do not matter

Value

random_dd A data.frame of a random latitude, random longitude and taxa name for each occurence record.

occUncertain documentation built on Jan. 22, 2023, 1:23 a.m.