The functions work on PC or UNIX systems (tested at Sun Solaris, IRIX (Silicon Graphics) and Windows 95 systems) with S-plus version 3.2 or later, but as the numerical calculations are quite large, we recommend a 586 (Pentium) or higher if it will be used on a PC.
The functions are implemented in S-plus code to make them easy to install on both PC and UNIX systems. As the calculations can get very large this means that the routines may be time-consuming, but we hope to make the routines faster in later versions.
With 700 observations, the matrixes on some systems will become too large. To some degree, you can come around this problem by increaseing the S-plus option object.size as shown in the exsample below:
> options(object.size=1e+007)
Anyway, this takes quite a while, and we recommend data sets of just some hundred observations.