photobiology (version 0.9.20)

trim_waveband: Trim (or expand) head and/or tail

Description

Trimming of waveband boundaries can be required needed when the spectral data does not cover the whole waveband.

Usage

trim_waveband(w.band, range = NULL, low.limit = 0, high.limit = Inf,
  trim = getOption("photobiology.waveband.trim", default = TRUE),
  use.hinges = TRUE)

Arguments

w.band

an object of class "waveband" or a list of such objects.

range

a numeric vector of length two, or any other object for which function range() will return a numeric vector of two wavelengths (nm).

low.limit

shortest wavelength to be kept (defaults to 0 nm).

high.limit

longest wavelength to be kept (defaults to Inf nm).

trim

logical (default is TRUE which trims the wavebands at the boundary, while FALSE discards wavebands that are partly off-boundary).

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 waveband object or a list of waveband objects trimmed or filtered depending on whether a single waveband object or a list of waveband objects was supplied as argument to formal parameter w.band.

See Also

Other trim functions: clip_wl, trim_spct, trim_wl

Examples

# NOT RUN {
VIS <- waveband(c(380, 760)) # nanometres

trim_waveband(VIS, c(400,700))
trim_waveband(VIS, low.limit = 400)
trim_waveband(VIS, high.limit = 700)

# }