ln.paleoTS {paleoTS} | R Documentation |
This function performs an approximate log-transformation (base e) of a paleoTS
object.
ln.paleoTS(y)
y |
a paleontological time series |
For a random variable x, its approximate mean on a log scale is the log of its untransformed mean. The approximate variance on a log scale is equal to the squared coefficient of variation.
the converted paleoTS
object.
Gene Hunt
Hunt, G. 2006. Fitting and comparing models of phyletic evolution: random walks and beyond. Paleobiology 32:578–601.
Lewontin, R. 1966. On the measurement of relative variability. Systematic Zoology 15:141–142.
y <- sim.GRW(20, 20, 1) yl <- ln.paleoTS(y) print (yl)