Read Spectral and Logged Data from Foreign Files.

photobiologyInOut

Package ‘photobiologyInOut’ provides functions for importing spectral data from diverse sources including instrument-specific files, spectral data output by solar-radiation simulation models, and files from on-line data repositories. It also includes functions for conversion of spectral data from/to classes defined in other R packages. Package ‘photobiologyInOut’ complements other packages in the ‘r4photobiology suite’ by allowing reading and writing “foreign” spectral data as well as reading non-spectral data acquired with data loggers. The functions transfer metadata from file headers to attributes of the returned objects, in most cases both the headers as text and parsed metadata extracted from them.

Data files from spectrometers from the following suppliers are currently supported: CID Bio-Science, Wasatch Photonics, Avantes, LI-COR, Macam Photonics, and Ocean Optics/Ocean Insight.

Data files from data loggers from the following suppliers are currently supported: Campbell Scientific and YoctoPuce.

Data files from output by radiation transfer models: libRadtran and TUV.

Data objects of classes defined in R packages: ‘hyperSpec’ (2-way), ‘colorSpec’, ‘pavo’ and ‘fda.usc’ (2-way).

Data files downloaded from repositories of spectral data: ASTER (NASA’s ECOSTRESS Spectral Library) and FReD (Floral Reflectance Database).

Developing a package like this is a never-ending task as I have only a limited sample of output files for testing and formats are quite variable. The functions may not work with different software or firmware versions used for acquiring spectral data from instruments. Even the format of files can depend on the current locale and operating system.

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

Warning

The functions in this package work with the example files I have had access to for testing, but they may not work with your own files as file formats vary.

PLEASE, BE VERY CAREFUL WHEN USING THIS PACKAGE. DO CHECK THAT UNITS USED IN THE IMPORTED FILE ARE THOSE EXPECTED BY THESE FUNCTIONS AND THAT THE VALUES IN THE RETRIEVED DATA ARE THOSE EXPECTED!

If the functions in this package do not work with your files, they hopefully will be useful as examples for developing your own functions. If you develop new functions or improve the existing ones, please, do contribute them back to this project.

Installation

Installation of the most recent stable version from CRAN:

install.packages("photobiologyInOut")

Installation of the current unstable version from GitHub:

# install.packages("devtools")
devtools::install_github("aphalo/photobiologyInOut")

Documentation

HTML documentation is available at (https://docs.r4photobiology.info/photobiologyInOut/), including a User Guide.

News on updates to the different packages of the ‘r4photobiology’ suite are regularly posted at (https://www.r4photobiology.info/).

Two articles introduce the basic ideas behind the design of the suite and its use: Aphalo P. J. (2015) (https://doi.org/10.19232/uv4pb.2015.1.14) and Aphalo P. J. (2016) (https://doi.org/10.19232/uv4pb.2016.1.15).

A book is under preparation, and the draft is currently available at (https://leanpub.com/r4photobiology/).

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 (https://doi.org/10.31885/9789521083631).

Contributing

Pull requests, bug reports, and feature requests are welcome at (https://github.com/aphalo/photobiologyInOut). Contribution of example data files that could be supported in future versions will be very much appreciated.

Citation

If you use this package to produce scientific or commercial publications, please cite according to:

citation("photobiologyInOut")
#> To cite package 'photobiologyInOut' in publications, please use:
#> 
#>   Aphalo, Pedro J. (2015) The r4photobiology suite. UV4Plants Bulletin,
#>   2015:1, 21-29. DOI:10.19232/uv4pb.2015.1.14
#> 
#> A BibTeX entry for LaTeX users is
#> 
#>   @Article{,
#>     author = {Pedro J. Aphalo},
#>     title = {The r4photobiology suite},
#>     journal = {UV4Plants Bulletin},
#>     volume = {2015},
#>     number = {1},
#>     pages = {21-29},
#>     year = {2015},
#>     doi = {10.19232/uv4pb.2015.1.14},
#>   }

License

© 2015-2023 Pedro J. Aphalo ([email protected]). Released under the GPL, version 2 or greater. This software carries no warranty of any kind.