q_response: Photon-based photo-response

Description

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

Usage

q_response(spct, w.band, quantity, time.unit, wb.trim, use.hinges, ...)
"q_response"(spct, w.band, quantity, time.unit, wb.trim, use.hinges, ...)
"q_response"(spct, w.band = NULL, quantity = "total", time.unit = NULL, wb.trim = getOption("photobiology.waveband.trim", default = TRUE), use.hinges = getOption("photobiology.use.hinges", default = NULL), ...)
"q_response"(spct, w.band = NULL, quantity = "total", time.unit = NULL, 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"

time.unit

character or lubridate::duration

wb.trim

logical if TRUE wavebands crossing spectral data boundaries are trimmed, if FALSE, they are discarded

use.hinges

logical 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 single numeric value expressed either as a fraction of one or a percentage, or a vector of the same length as the list of wave.bands. The quantity returned, although always on photon-based units, depends on the value of quantity.

Methods (by class)

default: Default method for generic function
response_spct: Method for response spectra.
response_mspct: Calculates photon (quantum) response from a response_mspct

Examples

Run this code

q_response(ccd.spct, new_waveband(200,300))
q_response(photodiode.spct)