dscal {bigalgebra} | R Documentation |
Scales a vector by a constant.
dscal(N = NULL, ALPHA, Y, INCY = 1)
N |
an integer. Number of elements in input vector(s) |
ALPHA |
a real number. The scalar alpha |
Y |
a big matrix to scale by ALPHA |
INCY |
an integer. Storage spacing between elements of Y. |
Update Y.
set.seed(4669)
A = big.matrix(3, 2, type="double", init=1, dimnames=list(NULL,
c("alpha", "beta")), shared=FALSE)
dscal(ALPHA=2,Y=A)
A[,]
# The big.matrix file backings will be deleted when garbage collected.
rm(A)
gc()