distm | R Documentation |

Distance matrix of a set of points, or between two sets of points

distm(x, y, fun=distGeo)

`x` |
longitude/latitude of point(s). Can be a vector of two numbers, a matrix of 2 columns (first one is longitude, second is latitude) or a SpatialPoints* object |

`y` |
Same as |

`fun` |
A function to compute distances (e.g., distCosine or distGeo) |

Matrix of distances

Robert Hijmans

https://en.wikipedia.org/wiki/Great_circle_distance

`distGeo, distCosine, distHaversine, distVincentySphere, distVincentyEllipsoid`

xy <- rbind(c(0,0),c(90,90),c(10,10),c(-120,-45)) distm(xy) xy2 <- rbind(c(0,0),c(10,-10)) distm(xy, xy2)

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