# LinkedMatrix

LinkedMatrix is an R package that provides matrices implemented as lists of matrix-like nodes, linked by columns or rows.

It was originally developed for the BGData package to address the array size limit of ff (`length must be between 1 and .Machine$integer.max`

) by chaining multiple `ff`

objects together.

This package is deliberately kept simple. For computational methods that use LinkedMatrix check out the BGData package.

## Example

The following code generates three different matrix-like objects and links them together by rows in a `RowLinkedMatrix`

. The `LinkedMatrix`

instance can then be treated like any other regular matrix.

```
library(LinkedMatrix)
m1 <- ff::ff(initdata = rnorm(50), dim = c(5, 10))
m2 <- bigmemory::big.matrix(init = rnorm(50), nrow = 5, ncol = 10)
m3 <- matrix(data = rnorm(50), nrow = 5, ncol = 10)
m <- RowLinkedMatrix(m1, m2, m3)
dim(m)
m[1, ]
m[, 1]
```

## Installation

Install the stable version from CRAN:

`install.packages("LinkedMatrix")`

Alternatively, install the development version from GitHub:

```
# install.packages("remotes")
remotes::install_github("QuantGen/LinkedMatrix")
```

## Documentation

Further documentation can be found on RDocumentation.

## Contributing

- Issue Tracker: https://github.com/QuantGen/LinkedMatrix/issues
- Source Code: https://github.com/QuantGen/LinkedMatrix