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Geographical distances

Source: R/geographic.R
dist_geographic.Rd

This function calculate some geographical distances considering a list of places specifying their latitud and longitud. The function currently works for degree decimal or radians formats.

Usage

dist_geographic(
  latitude,
  longitud,
  method = c("spherical", "harvesine", "manhattan", "minkowski"),
  places = NULL,
  dd_to_radians = FALSE,
  p = NULL
)

Source

Adapted from Mario Pineda-Krch (Great-circle distance calculations in R)

Arguments

latitude

A vector with latitude

longitud

A vector with longitud

method

Whether to use the Spherical Law of Cosines spherical (default), Haversine formula harvesine, Manhattan Distance manhattan or Minkoowski distance minkowski

places

A vector with the names of the places

dd_to_radians

Whether to transform degree decimal format to radians

p

Parameter p for the estimation of Minkowski distance (default = 2, which is equivalent to an Euclidian Distance)

Value

This function return a distance matrix.

Examples


set.seed(1234)
x <- cbind(latitud = rnorm(5, -90), longitud = rnorm(5, 45))
dist_geographic(x[, 1], x[, 2], method = "harvesine")
#>           [,1]       [,2]      [,3]      [,4]       [,5]
#> [1,]     0.000 10082.8221 12409.829  8394.701 10610.5618
#> [2,] 10082.822     0.0000  5141.096 16711.983   980.0773
#> [3,] 12409.829  5141.0964     0.000 18176.087  4162.4257
#> [4,]  8394.701 16711.9829 18176.087     0.000 17689.1877
#> [5,] 10610.562   980.0773  4162.426 17689.188     0.0000