The colon data contains two objects: colon.x, microarray
expression data for 62 colon cancer samples and colon.y, the class
labels for these samples.
data(colon)An expression data matrix (62x2000) colon.x and a class label
vector (62) colon.y for 62 samples.
colon.y is the class labels of the 62 samples. colon.x is
the microarray expression data matrix with each row representing a sample.
Guo, Y. et al. (2004) Regularized Discriminant Analysis and Its Application in Microarrays, Technical Report, Department of Statistics, Stanford University.