Package ‘photobiologyLamps’ is a data-only R package containing spectral emission data for diverse types of lamps, while data for LEDs sold as electronic components are included in package ‘photobiologyLEDs’.

The data in this package are stored in objects of classes defined in package ‘photobiology’ which are mostly backwards compatible with data frames.

This package is part of a suite of R packages for photobiological calculations described at the r4photobiology web site.


The first example shows you how to plot the emission spectrum of one of the lamps.

     annotations = c("+", "title:what"))

The second example shows how to access metadata.


Installation of the most recent stable version from CRAN:


Installation of the current unstable version from Bitbucket:


HTML documentation is available at (, including a User Guide.

News on updates to the different packages of the ‘r4photobiology’ suite are regularly posted at (

Two articles introduce the basic ideas behind the design of the suite and describe its use: Aphalo P. J. (2015) ( and Aphalo P. J. (2016) (

A book is under preparation, and the draft is currently available at (

A handbook written before the suite was developed contains useful information on the quantification and manipulation of ultraviolet and visible radiation: Aphalo, P. J., Albert, A., Björn, L. O., McLeod, A. R., Robson, T. M., & Rosenqvist, E. (Eds.) (2012) Beyond the Visible: A handbook of best practice in plant UV photobiology (1st ed., p. xxx + 174). Helsinki: University of Helsinki, Department of Biosciences, Division of Plant Biology. ISBN 978-952-10-8363-1 (PDF), 978-952-10-8362-4 (paperback). PDF file available from (


Pull requests, bug reports, and feature requests are welcome at (


© 2013-2019 Pedro J. Aphalo (). Released under the GPL, version 2 or greater. This software carries no warranty of any kind.