rTensor (version 1.4.9)

[-methods: Extract or Replace Subtensors

Description

Extends '[' and '[<-' from the base array class for the Tensor class. Works exactly as it would for the base 'array' class.

Usage

# S4 method for Tensor
[(x, i, j, ..., drop = TRUE)
# S4 method for Tensor
[(x, i, j, ...) <- value

Value

an object of class Tensor

Arguments

x

Tensor to be subset

i, j, ...

indices that specify the extents of the sub-tensor

drop

whether or not to reduce the number of modes to exclude those that have '1' as the mode

value

either vector, matrix, or array that will replace the subtensor

Details

x[i,j,...,drop=TRUE]

Examples

tnsr <- rand_tensor()
tnsr[1,2,3]
tnsr[3,1,]
tnsr[,,5]
tnsr[,,5,drop=FALSE]

tnsr[1,2,3] <- 3; tnsr[1,2,3]
tnsr[3,1,] <- rep(0,5); tnsr[3,1,]
tnsr[,2,] <- matrix(0,nrow=3,ncol=5); tnsr[,2,]