The wheat dataset contains 100 wheat samples with specified protein and moisture content, published by J. Kalivas. Samples were measured by diffuse reflectance as log (I/R) from 1100 to 2500 nm (701 data points) in 2 nm intervals.

data(wheat)

References

Kalivas, J. H. (1997). Two data sets of near infrared spectra. Chemometrics and Intelligent Laboratory Systems, 37(2), 255--259.

Examples

data("wheat") X <- wheat$x y <- wheat$protein n <- nrow(wheat$x) set.seed(1001) samp.idx <- sample(1L:n, round(n * 0.7)) X.cal <- X[samp.idx, ] y.cal <- y[samp.idx] X.test <- X[-samp.idx, ] y.test <- y[-samp.idx]