meanpt: mean, median, and variance for locations.
In geovec: Manipulation of geographic vector (points, lines, polygons) data

Description Usage Arguments Value Author(s) References Examples

mean, median, and variance for points or polygons. For polygons, the centroid is used. Mean and median can be weighted.

## S4 method for signature 'SpatialPoints'
xymean(x, w)
## S4 method for signature 'SpatialPoints'
xymedian(x, w, converge)
## S4 method for signature 'SpatialPoints'
xyvar(x, simple=TRUE)

`x`	SpatialPoints or SpatialPolygons object
`w`	weights (vector of numeric values, with a length that is equal to the number of spatial features in `x`
`converge`	xxx
`simple`	xxx

Numeric (coordiate pair for xymean and xymedian)

Robert J. Hijmans

Rogerson, P.A., 2010. Statistical methods for xygraphy. A student's guide. Sage

x <- c(.8616, .1277, .3093, .4623, .4657, .2603, .6680, .2705, .1981, .8891)
y <- c(.1781, .4499, .5080, .3419, .3346, .0378, .3698, .1659, .1372, .1192)
p <- SpatialPoints(cbind(x, y))
xymean(p)
xymean(p, w=1:10)
xymedian(p, converge=0.0001)