Calculate the fluorescence index (FI)

Source: R/eem_metrics.R

Calculate the fluorescence index (FI)

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)
#>    sample       fi
#> 1 sample1 1.264782