[R] An R interface to Model Building

Hello all, To anyone who is interested, I'm trying to learn a bit more about developing applications in R with user interfaces. I've been playing around with gWidgets to develop a model building interface. I'd appreciate any comments, suggestions, or guidance on how to better structure my R code

[R] Generating Data for Simulation

Are there any R packages that could be used to generate random data given a set of parameters? Or, if not a package, how would one generate such data? What I would like to do is simulate some sample data for a regression model given a set of population covariances and distribution parameters to be

[R] AOV and Error

Hello all, Does anyone know of any good resources on specifying anova models in R with aov. I particular, I am interesting in the details and functioning of the Error() structure. I could not find anything in the documentation and help(Error) bounced me into the aov() help pages. Thank you. Br