R: Densify with explicit zeroes

densify {sparseinv} | R Documentation

## Densify with explicit zeroes

### Description

This function takes two sparse matrices and returns the first matrix padded with explicit zeros so that it is at least dense (probably denser) than the second matrix. This function only works with matrices of class Matrix #'

### Usage

    densify(A, B)

### Arguments

`A` | object of class Matrix
`B` | object of class Matrix

### Value

object of class Matrix

### Examples

    require(Matrix)
    Q1 <- sparseMatrix(i = c(1, 2, 2), j = c(1, 1, 2), x = c(0.1, 0.2, 1))
    Q2 <- sparseMatrix(i = c(1, 1, 2, 2),j = c(1, 2, 1, 2), x = c(0.1, 0.3, 0.2, 1))
    Q1dens <- densify(Q1, Q2)
    Q1
    Q1dens

[Package sparseinv version 0.1.3 Index]