haldport      Demo of the 4 main RXshrink functions using the haldport data.frame.
longley2      Demo of RXshrink qm.ridge(), unr.ridge() and correct.signs() on the longley2 data.frame.
mpg           Demo of RXshrink unr.ridge() and MLtrue() functions on the mpg data.frame.
tycobb        Demo of RXshrink unr.ridge() and RXpredict() functions on the tycobb data.frame.
