logret: Computes (de-meaned) log returns.
Description
Small utlity function returning either diff(log(x))
in case the
argument demean
is set to FALSE
, or diff(log(x)) -
mean(diff(log(x)))
in case that demean
is TRUE
.
Usage
logret(x, demean = FALSE)
Arguments
demean
A single logical value indicating whether the returns should
be de-meaned. Defaults to FALSE
.
Value
A vector of length length(x) - 1
, containing (de-meaned)
returns.