Apply Z^T to arbitrary multi-vectors without forming Z.

Apply Z^T to arbitrary multi-vectors without forming Z.

Usage

Zt_times(Zop, S)

Arguments

Zop

Operator for Z.

S

Dense or sparse matrix with n rows.

Value

Dense matrix with r rows.

Examples

# \donttest{
library(Matrix)
K1 <- Matrix(rnorm(20), 10, 2)
Zop <- make_Zop_from_Ks(list(K1))
S <- matrix(rnorm(30), 10, 3)
result <- Zt_times(Zop, S)
# }