.BG
.FN censcale
.TL
Centering and Scaling of Data
.SH DESCRIPTION
Transforms a data set by subtracting the column mean from each column and
dividing each column by the square root of its variance when the latter is
sufficiently large in magnitude.
.CS
censcale(x, tol = 0.0001)
.PP
.RA
.AG x
Matrix of observations.
.OA
.AG tol
Threshold for column scaling. A column is divided by the square root of its
variance (standard deviation) when that quantity exceeds `tol', The default
value is `0.0001'.
.RT
The centered and scaled matrix of observations.
.EX
> data <- matrix(aperm(iris, c(1,3,2)), 150, 4)
> mhtree(censcale(x))

.KW 
.WR

