Nothing
#
# round.R
#
# discretisation of coordinates
#
# $Revision: 1.6 $ $Date: 2019/02/20 03:34:50 $
round.ppp <- round.pp3 <- round.ppx <- function(x, digits=0, ...) {
coords(x) <- round(as.matrix(coords(x)), digits=digits, ...)
return(x)
}
rounding <- function(x) {
UseMethod("rounding")
}
rounding.ppp <- rounding.pp3 <- rounding.ppx <- function(x) {
rounding(as.matrix(coords(x)))
}
rounding.default <- function(x) {
# works for numeric, complex, matrix etc
if(all(x == 0))
return(NULL)
if(isTRUE(all.equal(x, round(x)))) {
# integers: go up
k <- 0
smallk <- -log10(.Machine$double.xmax)
repeat {
if(k < smallk || !isTRUE(all.equal(x, round(x, k-1))))
return(k)
k <- k-1
}
} else {
# not integers: go down
k <- 1
bigk <- -log10(.Machine$double.eps)
repeat {
if(k > bigk || isTRUE(all.equal(x, round(x, k))))
return(k)
k <- k+1
}
}
}
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