Christofer Bogaso <bogaso.christofer <at> gmail.com> writes: > > Hi again, > > In R, there are various numerics like, NA, Inf, or simple integers etc. > However I want to include one custom type: "TBD", which R should treat as > numeric, not character. > > That "TBD" should have same property like Inf, however except this: TBD - > TBD = 0 > > In future, I am planning to add few more properties to TBD. > > Can somebody guide me if this is possible in R, ans also some pointer on > how can be done in R >
Possible? Yes. Your question might be framed as "How do I create a class and write a method for '-' that does ... ?" The answer is "learn about methods and classes in R". To get started, see ?methods ?class ?groupGenericFunction-class ?groupGeneric and follow the links therein. Check the posting guide. If you need to follow up, you should consider whether the question you have fits better on R-devel. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
