eem_fluorescence_index: Calculate the fluorescence index (FI)

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

Description

Calculate the fluorescence index (FI)

Usage

eem_fluorescence_index(eem, verbose = TRUE)

Arguments

eem	An object of class eemlist.
verbose	Logical determining if additional messages should be printed.

Value

An object of class eemlist.

A data frame containing fluorescence index (FI) for each eem.

Interpolation

Different excitation and emission wavelengths are often used to measure EEMs. Hence, it is possible to have mismatchs between measured wavelengths and wavelengths used to calculate specific metrics. In these circumstances, EEMs are interpolated using the interp2 function from the parcma library. A message warning the user will be prompted if data interpolation is performed.

References

http://doi.wiley.com/10.4319/lo.2001.46.1.0038

See Also

interp2

Examples

file <- system.file("extdata/cary/scans_day_1/", "sample1.csv", package = "eemR")
eem <- eem_read(file, import_function = "cary")

eem_fluorescence_index(eem)

Example output

   sample       fi
1 sample1 1.264782

eemR documentation built on June 27, 2019, 5:08 p.m.