bdc (version 1.1.6)

bdc_coordinates_precision: 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)
)

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.

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.

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
)