nonzero: Retrieve the indices of non-zero elements in sparse matrices

In DAPAR: Tools for the Differential Analysis of Proteins Abundance with R

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)

DAPAR documentation built on April 11, 2021, 6 p.m.