photobiology (version 0.9.25)

normalized_diff_ind: Calculate a normalized index.

Description

This function returns a normalized difference index value for an arbitrary pair of wavebands.

Usage

normalized_diff_ind(spct, plus.w.band, minus.w.band, f, ...)

Arguments

spct

an R object

plus.w.band

waveband objects The waveband determine the region of the spectrum used in the calculations

minus.w.band

waveband objects The waveband determine the region of the spectrum used in the calculations

f

function used for integration taking spct as first argument and a list of wavebands as second argument.

...

additional arguments passed to f

Value

A numeric value for the index