photobiology (version 0.9.11)

transmittance: Transmittance

Description

Summary transmittance for supplied wavebands from filter or object spectrum.

Usage

transmittance(spct, w.band, quantity, wb.trim, use.hinges, ...)
"transmittance"(spct, w.band, quantity, wb.trim, use.hinges, ...)
"transmittance"(spct, w.band = NULL, quantity = "average", wb.trim = getOption("photobiology.waveband.trim", default = TRUE), use.hinges = getOption("photobiology.use.hinges", default = NULL), ...)
"transmittance"(spct, w.band = NULL, quantity = "average", wb.trim = getOption("photobiology.waveband.trim", default = TRUE), use.hinges = getOption("photobiology.use.hinges", default = NULL), ...)
"transmittance"(spct, w.band = NULL, quantity = "average", wb.trim = getOption("photobiology.waveband.trim", default = TRUE), use.hinges = getOption("photobiology.use.hinges", default = NULL), ..., idx = !is.null(names(spct)))
"transmittance"(spct, w.band = NULL, quantity = "average", wb.trim = getOption("photobiology.waveband.trim", default = TRUE), use.hinges = getOption("photobiology.use.hinges", default = NULL), ..., idx = !is.null(names(spct)))

Arguments

spct

an R object

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 Flag indicating if wavebands crossing spectral data boundaries are trimmed or ignored

use.hinges

logical Flag indicating whether to use hinges to reduce interpolation errors

...

other arguments

idx

logical whether to add a column with the names of the elements of spct

Value

A numeric vector with no change in scale factor

Methods (by class)

• default: Default method
• filter_spct: Method for filter spectra
• object_spct: Method for object spectra
• filter_mspct: Calculates transmittance from a filter_mspct
• object_mspct: Calculates transmittance from a object_mspct

Examples

transmittance(polyester.spct, waveband(c(280, 315)))
transmittance(polyester.spct, waveband(c(315, 400)))
transmittance(polyester.spct, waveband(c(400, 700)))