RandomTArray-class {DelayedRandomArray} | R Documentation |
A DelayedArray subclass that performs on-the-fly sampling of F-distributed values.
RandomTArraySeed(dim, df, ncp, chunkdim = NULL) ## S4 method for signature 'RandomTArraySeed' DelayedArray(seed) RandomTArray(dim, df, ncp, chunkdim = NULL)
dim |
Integer vector of positive length, specifying the dimensions of the array. |
df, ncp |
Numeric vector used as the argument of the same name in If |
chunkdim |
Integer vector of length equal to |
seed |
A RandomTArraySeed object. |
All constructors return an instance of a RandomTArray object, containing random draws from a exponential distribution with the specified parameters.
Aaron Lun
The RandomArraySeed class, for details on chunking and the distributional parameters.
X <- RandomTArraySeed(c(1e5, 1e5), df=10) Y <- DelayedArray(X) Y # Fiddling with the distribution parameters: X2 <- RandomTArraySeed(c(1e5, 1e5), df=sample(20, 1e5, replace=TRUE)) Y2 <- DelayedArray(X2) Y2 # Using another array as input: library(Matrix) ncp <- rsparsematrix(1e5, 1e5, density=0.00001) ncp <- abs(DelayedArray(ncp)) + 1 X3 <- RandomTArraySeed(c(1e5, 1e5), df=10, ncp=ncp) Y3 <- DelayedArray(X3) Y3