Interface PrcompOptions

Centre the columns (default true), or subtract the given values.

The number k of components to keep in rotation and x (R's rank.): min(trunc(rank), nrow, ncol). It must be finite with a positive integer part. Default: all min(nrow, ncol). sdev always has all of them, as in R.

Scale the columns to unit variance (default false), or divide by the given values.

Drop the components whose standard deviation is at most tol times that of the first: rotation and x keep the components with sdev > sdev[0] * tol if they are fewer than k. Default: none are dropped.