randomLinComb {alr3} | R Documentation |
Computes Xa
where X
is an n \times p
matrix, and a
is
a random vector of length p
.
randomLinComb(X, seed = NULL)
## S3 method for class 'lm'
randomLinComb(X, seed=NULL)
X |
An |
seed |
If not NULL, use this to initialize the random number generator |
The matrix X
is first scaled and centered. a
is computed to have random
uniform components on (-1,1)
.
A vector of length n
.
Sanford Weisberg, sandy@stat.umn.edu
randomLinComb(matrix(rnorm(9),ncol=3))