cut: Manipulating the wavelength range of a 'Spectra' object

In spectacles: Storing, Manipulating and Analysis Spectroscopy and Associated Data

Manipulating the wavelength range of a Spectra object

Description

This methods allows to either select or remove a specific range of wavelengths from a Spectra object.

Usage

## S4 method for signature 'Spectra'
cut(x, ..., wl)

Arguments

x	an object inheriting from class Spectra
...	ignored
wl	a vector of the wavelengths to either select or remove from x

Details

The wavelengths are extracted if wl > 0, or removed if wl < 0. You can't mix negative and positive index in wl.

Value

An object of the same class as x.

Author(s)

Pierre Roudier [e-mail]

Examples

# Loading example data
data(australia)
spectra(australia) <- sr_no ~ ... ~ 350:2500

# Extracting a specific wavelengths range
s <- cut(australia, wl = 450:550)
plot(s)

s <- cut(australia, wl = c(450:550, 1850:2050))
plot(s)

# Removing a specific wavelengths range
s <- cut(australia, wl = -1*450:550)
plot(s)

s <- cut(australia, wl = -1*c(450:550, 1850:2050))
plot(s)

spectacles documentation built on July 10, 2023, 1:59 a.m.