What is this repository for?

This repository contains the draft of a handbook on Photobiological calculations with R. The handbook supports a suite of R packages developed by Pedro J. Aphalo at the University of Helsinki, Finland.

Is the book available as a PDF file for dwonload?

Yes, the book draft is available for download through Leanpub (

Just clone the repository

To build the pdf you will need LaTeX and Memoire, and R and knitr. At the moment the files are in Rnw format but will at some point possibly be reformatted using Bookdown.

Contribution guidelines

You are welcome to contribute pull requests and through raising issues.

Who do I talk to?