Tools for Pre-Processing Emission-Excitation-Matrix (EEM) Fluorescence Data

Provides various tools for preprocessing Emission-Excitation-Matrix (EEM) for Parallel Factor Analysis (PARAFAC). Different methods are also provided to calculate common metrics such as humification index and fluorescence index.

eemR

The eemR package implements various functions used calculate metrics from excitation-emission matrix (EEM) as well as to preform pre-processing corrections before PARAFAC analysis.

The latest release of the package from CRAN can be installed with:

install.packages("eemR")

The latest development version of the package can be installed with:

devtools::install_github("PMassicotte/eemR")

Vignette

A detailed vignette presenting the package which can be viewed using:

vignette(topic = "introduction", package = "eemR")

Supported spectrophotometers

At the moment, EEMs generated by the following spectrofluorometer are officially supported.

• Cary Eclipse .csv files

• Aqualog .dat files

• Shimadzu .TXT files

• Fluoromax-4 .dat files

• Hitachi F-7000 FL .TXT files

EEM can be read using the eem_read() function. Please fill an issue if you have other file formats you would like to add to the package. You can also write your own import function!