matrix.subset: Creates a subset of the matrix along an axis.
In adelie: Group Lasso and Elastic Net Solver for Generalized Linear Models

matrix.subset

R Documentation

Creates a subset of the matrix along an axis.

Description

Creates a subset of the matrix along an axis.

Usage

matrix.subset(mat, indices, axis = 1, n_threads = 1)

Arguments

`mat`	The `adelie` matrix to subset.
`indices`	Vector of indices to subset the matrix.
`axis`	The axis along which to subset (2 is columns, 1 is rows).
`n_threads`	Number of threads.

Value

Matrix subsetted along the appropriate axis. The object is an S4 class with methods for efficient computation by adelie.

Author(s)

James Yang, Trevor Hastie, and Balasubramanian Narasimhan
Maintainer: Trevor Hastie hastie@stanford.edu

Examples

n <- 100
p <- 20
X <- matrix.dense(matrix(rnorm(n * p), n, p))
indices <- c(1, 3, 10)
out <- matrix.subset(X, indices, axis=1)
out <- matrix.subset(X, indices, axis=2)

adelie documentation built on Sept. 11, 2024, 6:36 p.m.