nonzero {DAPAR}R Documentation

Retrieve the indices of non-zero elements in sparse matrices

Description

This function retrieves the indices of non-zero elements in sparse matrices of class dgCMatrix from package Matrix. This function is largely inspired from the package RINGO

Usage

nonzero(x)

Arguments

x

A sparse matrix of class dgCMatrix

Value

A two-column matrix

Author(s)

Samuel Wieczorek

Examples

library(Matrix)
mat <- Matrix(c(0,0,0,0,0,1,0,0,1,1,0,0,0,0,1),nrow=5, byrow=TRUE, sparse=TRUE)
res <- nonzero(mat)

[Package DAPAR version 1.16.6 Index]