spectr provides a consistent interface to use various methods to calculate the periodogram of a time-course. The methods include Lomb-Scargle, fast Fourier transform, and three versions of the chi-square periodogram. To see how we’ve used spectr, check out the paper.

## Installation

### Option 1: CRAN

install.packages('spectr')

### Option 2: Hughey Lab Drat Repository

1. Install BiocManager.

if (!requireNamespace('BiocManager', quietly = TRUE))
install.packages('BiocManager')
2. If you use RStudio, go to Tools → Global Options… → Packages → Add… (under Secondary repositories), then enter:

You only have to do this once. Then you can install or update the package by entering:

BiocManager::install('spectr')

Alternatively, you can install or update the package by entering:

BiocManager::install('spectr', site_repository = 'https://hugheylab.github.io/drat/')

## Usage

See the examples and detailed guidance in the reference documentation.