Extracts intensities from spectra in an ir object for specific spectral channels

ir_get_intensity extracts intensity values of spectra for specific user-defined spectral channels ("x axis values", e.g. wavenumber values).

Usage

ir_get_intensity(x, wavenumber, warn = TRUE)

Arguments

x

An object of class ir.

wavenumber

A numeric vector with spectral channels ("x axis values", e.g. wavenumber values) for which to extract intensities.

warn

logical value indicating if warnings should be displayed (TRUE) or not (FALSE).

Value

x with an additional column intensity. x$intensity is a list column with each element representing a data.frame with a row for each element in wavenumber and two columns:

x

The "x axis values" extracted with ir_get_wavenumberindex() applied on wavenumber and the corresponding spectrum in x.

y

The extracted intensity values

.

Examples

x <-
   ir::ir_sample_data %>%
   ir::ir_get_intensity(wavenumber = 1090)