I think the idea of a flexible framework for R wizards is a very good one. Just adding some menu based statistical functionality which cannot be extended easily would not do justice to the possible embedding. One of the strengths of R (beyond its currently available vast range of available methods) is it extensibility. Somehow, the embedding into OO should echo this extensibility from the very beginning, and not as an afterthought.
In ins minimal form, the framework would be based on an R function taking some inputs and producing some results. >From the signature of the function (number and types of parameters) and from the signature of the result description of the compound structure representing the result) one should construct dialog boxes querying the user for the inputs, and rules should be specified how the components of composite result types should be put into spreadsheet ranges. If such a framework is available, it should be easy to add a new function to the interface. -- Erich Neuwirth, University of Vienna Faculty of Computer Science Computer Supported Didactics Working Group Visit our SunSITE at http://sunsite.univie.ac.at Phone: +43-1-4277-39464 Fax: +43-1-4277-39459 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
