clip_wl {photobiology}

Clip head and/or tail of a spectrum

Description

Clip head and tail of a spectrum based on wavelength limits, no interpolation used at range boundaries.

Usage

clip_wl(x, range, ...)

## Default S3 method:
clip_wl(x, range, ...)

## S3 method for class 'generic_spct'
clip_wl(x, range = NULL, ...)

## S3 method for class 'generic_mspct'
clip_wl(x, range = NULL, ...)

## S3 method for class 'waveband'
clip_wl(x, range = NULL, ...)

## S3 method for class 'list'
clip_wl(x, range = NULL, ...)

Arguments

x

an R object.

range

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

...

ignored (possibly used by derived methods).

Value

a spectrum object or a collection of spectral objects of the same class as x with wavelength heads and tails clipped.

Methods (by class)

• clip_wl(default): Default for generic function

• clip_wl(generic_spct): Clip an object of class "generic_spct" or derived.

• clip_wl(generic_mspct): Clip an object of class "generic_mspct" or derived.

• clip_wl(waveband): Clip an object of class "waveband".

• clip_wl(list): Clip a list (of objects of class "waveband").

Note

The condition tested is wl >= range[1] & wl < (range[2] + 1e-13).

See Also

Other trim functions: trim_spct(), trim_waveband(), trim_wl()

Examples

clip_wl(sun.spct, range = c(400, 500))
clip_wl(sun.spct, range = c(NA, 500))
clip_wl(sun.spct, range = c(400, NA))