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) , then each layer of x has the corresponding value from center subtracted from it.
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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 scaling is done. If scale is a numeric vector with length equal to nlayers(x) , each layer of x is divided by the corresponding value. Scaling is done after centering.
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