## S4 method for signature 'SoilProfileCollection'
coordinates(obj)

## S4 replacement method for signature 'SoilProfileCollection'
coordinates(object) <- value

data(sp5)

# coordinates are stored in x and y column of site
sp5$x <- rnorm(length(sp5))
sp5$y <- rnorm(length(sp5))

# coordinates takes a formula object as input
coordinates(sp5) <- ~ x + y