Calculate range of distances (min-max) between all points in one or two rectangular objects containing lon-lat coordinates.

georange(x, y, sequential = FALSE, measure = "cheap")



Rectangular object (matrix, data.frame, tibble, whatever) containing longitude and latitude coordinates.


Optional second object which, if passed, results in distances calculated between each object in x and each in y.


If TRUE, calculate (vector of) distances sequentially along x (when no y is passed), otherwise calculate matrix of pairwise distances between all points.


One of "haversine" "vincenty", "geodesic", or "cheap" specifying desired method of geodesic distance calculation; see Notes.


A named vector of two numeric values: minimum and maximum, giving the respective distances in metres.


measure = "cheap" denotes the mapbox cheap ruler; measure = "geodesic" denotes the very accurate geodesic methods given in Karney (2013) "Algorithms for geodesics" J Geod 87:43-55, and as provided by the codesf::st_dist() function.


n <- 50 x <- cbind (-10 + 20 * runif (n), -10 + 20 * runif (n)) y <- cbind (-10 + 20 * runif (2 * n), -10 + 20 * runif (2 * n)) colnames (x) <- colnames (y) <- c ("x", "y") # All of the following returns vector of two values: minimum and maximum: d0 <- georange (x) d1 <- georange (x, y) d2 <- georange (x, sequential = TRUE) d0_2 <- georange (x, measure = "geodesic") # nanometre-accurate version of d0