bucket {wccsom} | R Documentation |
Function bucket
decreases the size (i.e., the number of columns)
of a data matrix by averaging variables. Function debucket
achieves the reverse by linear interpolation.
bucket(x, factor) debucket(x, nout)
x |
Data matrix: each variable corresponds with a column. |
factor |
Bucket factor: this number of variables will be averaged. |
nout |
Required number of variables after debucketing. |
Returns a data matrix of the new dimensions.
Ron Wehrens
data(cepha) gr <- somgrid(3,3, "hexagonal") set.seed(7) system.time(x <- wccsom(cepha$patterns, grid=gr, trwidth=20, rlen=500, FineTune=FALSE)) X <- bucket(cepha$patterns, 4) system.time(x <- wccsom(X, grid=gr, trwidth=5, rlen=500, FineTune=FALSE))