octane {mrfDepth}

Near infrared spectra of gasoline samples

Description

Near infrared absorbance spectra (NIR) of 39 gasoline samples over 226 wavelengths ranging from 1102nm to 1552nm with measurements every two nanometers. Six of the samples (25, 26, 36-39) contain added alcohol.

Usage

data(octane)

Format

A three-dimensional t = 226 by n = 39 by p = 1 array.

Source

Esbensen K., Schonkopf S., Midtgaard T. (1994). Multivariate Analysis in Practice. Trondheim: Camo.

References

Hubert M., Rousseeuw P.J., Vanden Branden K. (2005). ROBPCA: a new approach to robust principal component analysis. Technometrics, 47, 64–79.

Examples

data(octane)
matplot(octane[,1:30,1], type = "l", lty = 1, col = "black")