geomean function

Mean location of sperhical coordinates

mean location for spherical (longitude/latitude) coordinates that deals with the angularity. I.e., the mean of longitudes -179 and 178 is 179.5 methods

geomean(xy, w)

Arguments

• xy: matrix with two columns (longitude/latitude), or a SpatialPoints or SpatialPolygons object with a longitude/latitude CRS
• w: weights (vector of numeric values, with a length that is equal to the number of spatial features in x

Returns

Ccoordinate pair (numeric)

Examples

xy <- cbind(x=c(-179,179, 177), y=c(12,14,16))
xy
geomean(xy)

Author(s)

Robert J. Hijmans