This function checks whether a pair of coordinate vectors represent
geographic longitude and latitude values. The function returns `TRUE`
if all longitude values are within -180 (- tolerance) and 180 (+ tolerance)
and the latitude is within -90 (- tolerance) and 90 (+ tolerance).
Usage
is_lonlat(lon, lat, tolerance = 0.1)
Arguments
- lon
Numeric vector of longitudes in degrees.
- lat
Numeric vector of latitudes in degrees.
- tolerance
Numeric tolerance (in degrees) for checking the global
longitude/latitude bounds. Default is 0.1.
Value
A logical value. `TRUE` if values are within the ranges and `FALSE` otherwise.
Examples
is_lonlat(lon = c(-3, 10, 179), lat = c(40, -20, 5))
#> [1] TRUE
is_lonlat(lon = c(100000, 150000), lat = c(4500000, 4600000))
#> [1] FALSE
