A sample object of class ir. The data set
contains ATR-MIR spectra for a set of organic reference materials
along with their metadata (types of samples and a description) and
accessory data (Klason lignin mass fraction and holocellulose mass fraction).
Format
A data frame with 58 rows and 7 variables:
- id_measurement
An integer vector with a unique id for each spectrum.
- id_sample
A character vector with a unique id for each sample.
- sample_type
A character vector containing class labels for the types of reference materials.
- sample_comment
A character vector containing comments to each sample.
- klason_lignin
A numeric vector with the mass fractions of Klason lignin in each sample.
- holocellulose
A numeric vector with the mass fractions of holocellulose in each sample.
- spectra
See
ir_new_ir().
Source
The data set was derived from https://www.nature.com/articles/s41467-018-06050-2 and published by Hodgkins.2018;textualir under the CC BY 4.0 license https://creativecommons.org/licenses/by/4.0/. Hodgkins.2018;textualir originally derived the data on Klason Lignin and Holocellulose content from DelaCruz.2016;textualir.