RMAT is an R package for simulating random matrices and ensembles as well as computing and analyzing their eigenvalue spectra and dispersions.

## Installation

NOTE: This package has been submitted to CRAN and is pending release.

You can install the package in one of two ways:

```
# Through CRAN
install.packages("RMAT")
# Through Github
devtools::install_github(repo = "ataqi23/RMAT")
```

## Usage

The package can be thought to contain two priamry modules: the *matrix module* and *spectral statistics module*.

### Matrices

Included in the package are various wrapper functions for generating random matrices very efficiently. They follow the `RM_xxx`

format in allusion to the `stats`

sampling functions like `rnorm`

. Every matrix sampling function has an ensemble counterpart in the `RME_xxx`

format.

Consider the following example:

```
library(RMAT)
# Generate an ensemble of 50x50 Complex Hermitian Standard Normal matrices
ens <- RME_norm(N = 20, cplx = T, herm = T, size = 50)
```

The matrices included are:

- Uniform Matrices
- Normal Matrices
- Tridiagonal Matrices
- Beta Ensemble for b = 1,2,4
- Generalized Beta Ensemble for b > 0
- Stochastic Matrices
- Erdos-Renyi Graph Transition Matrices

### Spectral Statistics

The two primary functions in the spectral statistics module are `spectrum`

and `dispersion`

. These two functions take either a matrix or an ensemble, and return the respective eigenvalue spectrum or dispersion. Consider the following example:

```
library(RMAT)
# Generate a random matrix ensemble
ens <- RME_beta(N = 20, beta = 4, size = 50)
# Compute the spectral statistics of the ensemble
ens_spectrum <- spectrum(ens, sort_norms = FALSE)
ens_dispersion <- dispersion(ens, pairs = "consecutive", sort_norms = FALSE)
```

## About

This package was developed as a part of my Reed senior thesis in the Spring of 2021.