Validate longitude and latitude vectors — validateLonsLats • MazamaCoreUtils

Validate longitude and latitude vectors to ensure they are numeric, have matching lengths, and contain values within valid geographic bounds.

validateLonsLats(longitude = NULL, latitude = NULL, na.rm = FALSE)

Arguments

longitude: Vector of longitudes in decimal degrees east.
latitude: Vector of latitudes in decimal degrees north.
na.rm: Logical specifying whether to remove NA values before validation.

Value

Invisibly returns TRUE if validation succeeds.

Details

Longitudes must fall between -180 and 180 degrees and latitudes must fall between -90 and 90 degrees. If validation fails, an error is generated.

Examples

longitude <- c(-122.5, -122.4)
latitude <- c(47.5, 47.6)

validateLonsLats(longitude, latitude)

# Remove missing values before validation
validateLonsLats(
  c(-122.5, NA),
  c(47.5, NA),
  na.rm = TRUE
)

if (FALSE) { # \dontrun{
validateLonsLats(c(-200, 0), c(45, 46))
} # }