R: Calculate reflectance from spectral reflectance

reflectance_spct {photobiology} | R Documentation

## Calculate reflectance from spectral reflectance

### Description

This function returns the mean reflectance for a given waveband and a reflectance spectrum.

### Usage

    reflectance_spct(spct, w.band, quantity, wb.trim, use.hinges)

### Arguments

`spct` | an object of class generic_spct"
`w.band` | waveband or list of waveband objects or a numeric vector of length two. The waveband(s) determine the region(s) of the spectrum that are summarized. If a numeric range is supplied a waveband object is constructed on the fly from it.
`quantity` | character string One of "total", "average" or "mean", "contribution", "contribution.pc", "relative" or "relative.pc"
`wb.trim` | logical if TRUE wavebands crossing spectral data boundaries are trimmed, if FALSE, they are discarded
`use.hinges` | logical Flag indicating whether to insert "hinges" into the spectral data before integration so as to reduce interpolation errors at the boundaries of the wavebands.

### Value

A single numeric value expressed as a fraction of one

[Package photobiology version 0.9.21 Index]