Converts distance objects into similarity objects.
dist2sim(dist, transform, k = 1, normalise = TRUE, max_d)object of class distance
object of class character, can be either "linear"
or "exponential"
scaling parameter
object of class logical, which when TRUE will
normalise distances to one
object of class numeric
dist2sim(x) returns an object of class similarity.
Distances can be transformed either *linearly* or *exponentially*. That is
1 - k * dist for non-negative values, or exp(-k * dist),
respectively. If normalise is true, then dist = dist/max_d.