R supports a number of databases and if you only need to work with a small amount of data at once it should be readily do-able; however, R keeps objects in memory and if you need large amounts at once then you could run into problems. Note that S-Plus keeps objects on disk and has other features aimed at large data and might be an alternative if R cannot handle the size and you want something based on the S language.
Since SAS was developed many years ago when optimizing computer resources was more important than it is now it might be difficult to find an alternative that matches it for performance with large data sets. You probably want to quickly develop the core of your app in such a way that it has the main performance characteristics of the full app so you can get an idea of whether it will work prior to spending the time on the full code. Also note that R typically processes matrices faster than data frames and, in general, how you write your application may affect its performance. On 4/21/06, Werner Wernersen <[EMAIL PROTECTED]> wrote: > Hi there! > > I am considering to port a SAS application to R and I would like to hear your > opinion if you think this is possible and worthwhile. SAS is mainly used to > do data management and then to do some aggregations and simple computations > on the data and to output a modified data set. The main problem I see is the > size of the data file. As I have no access to SAS yet I cannot give real > details but the SAS data file is about 7 gigabytes large. (It's only the > basic SAS system without any additional modules) > > What do you think, would a port to R be possible with reasonable effort? Is R > able to handle that size of data? Or is R prepared to work together with some > database system? > > Thanks for your thoughts! > > Best regards, > Werner > > > --------------------------------- > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
