wheat: The wheat dataset

In OHPL: Ordered Homogeneity Pursuit Lasso for Group Variable Selection

Description

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.

Usage

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]

Example output

OHPL documentation built on May 18, 2019, 9:03 a.m.