center
logical or numeric. If TRUE
, centering is done by subtracting the layer means (omitting NA
s), and if FALSE
, no centering is done. If center
is a numeric vector with length equal to the nlayers(x)
scale
logical or numeric. If TRUE
, scaling is done by dividing the (centered) layers of x
by their standard deviations if center
is TRUE
, and the root mean square otherwise. If scale is FALSE
, no