bdc_coordinates_precision: Flag low-precise geographic coordinates

In brunobrr/bdc: Biodiversity Data Cleaning

Flag low-precise geographic coordinates

Description

This function flags records with a coordinate precision below a specified number of decimal places. Coordinates with one, two, or three decimal places present a precision of~11.1 km, ~1.1 km, and ~111 m at the equator, respectively.

Usage

bdc_coordinates_precision(
  data,
  lat = "decimalLatitude",
  lon = "decimalLongitude",
  ndec = c(0, 1, 2)
)

Arguments

data	data.frame. A data.frame containing geographic coordinates.
lat	character string. The column with latitude in decimal degrees and WGS84. Default = "decimalLatitude".
lon	character string. The column with longitude in decimal degrees and WGS84. Default = "decimalLongitude".
ndec	numeric. The minimum number of decimal places that the coordinates should have to be considered valid. Default = 2.

Value

A data.frame with logical values indicating whether values are equal or higher than the specified minimum decimal number (ndec). Coordinates flagged as FALSE in .rou column are considered imprecise.

Examples

x <- data.frame(
  lat = c(-21.34, 23.567, 16.798, -10.468),
  lon = c(-55.38, -13.897, 30.8, 90.675)
)

bdc_coordinates_precision(
  data = x,
  lat = "lat",
  lon = "lon",
  ndec = 3
)

brunobrr/bdc documentation built on June 11, 2025, 1:56 p.m.