Spectran, developed by the German Society for Lighting Technology and Lighting Design (LiTG), is a Shiny App designed to analyze light spectra for both visual and non-visual (also known as melanopic) needs. The app supports the import of spectral data in CSV or text formats and also offers an extensive library of example spectra. Users can even create their own spectral distributions within the app. The primary aim of Spectran is to offer easy access to and a visual representation of the calculations that underlie commonly used parameters. As such, it serves as an ideal tool for educational purposes and for generating presentation-ready graphs in lighting research and application.
The current development version is a prototype that includes transmission and reflection calculations. The calculation results have been verified and can already be considered reliable within the scope described in the material validation documentation. Details of the user guidance and presentation may still change before the transmission and reflection workflow is released.
Try the development prototype in German or English. Both versions are updated automatically from the transmission branch.
Installation
You can install the stable release version of Spectran from CRAN with:
install.packages("Spectran")You can install the latest development version of Spectran from GitHub with:
# install.packages("devtools")
devtools::install_github("LiTGde/Spectran")How to use Spectran
The commands show how to start Spectran:
or open the English version hosted on Posit Connect Cloud.
You can also use the German version:
Spectran(lang_setting = "Deutsch")
or open the German version hosted on Posit Connect Cloud.
