tisrtc: Permutes the columns of the design matrix:
Predictors in omega are placed in the first q positions
Description
See Marazzi A. (1993), p.188Usage
tisrtc(x, iv, n = nrow(x))
References
Marazzi A. (1993) Algorithm, Routines, and S functions
for Robust Statistics. Wadsworth & Brooks/cole, Pacific Grove,
California. p.188