See Mullen et al. (2011) for description of this dataset.
Usage
data("xrrData")
Arguments
References
Mullen, K.M, Ardia, D., Gil, D., Windover, D., Cline,
J. (2011). DEoptim: An R Package for Global Optimization by
Differential Evolution. Journal of Statistical Software, 40(6), 1-26.
URL http://www.jstatsoft.org/v40/i06/.