distm function

Distance matrix

Distance matrix of a set of points, or between two sets of points 1.1

distm(x, y, fun=distGeo)

Arguments

• 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 x. If missing, y is the same as x
• fun: A function to compute distances (e.g., distCosine or distGeo)

Returns

Matrix of distances

References

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

Author(s)

Robert Hijmans

See Also

distGeo, distCosine, distHaversine, distVincentySphere,distVincentyEllipsoid

Examples

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)