Thanks a lot. Matt's code works very well. Could i use several 'for' arguments to get the results as what i think first?
2009/7/28 John Kane <jrkrid...@yahoo.ca> > > I see Matt Aldridge has given you the answers to your specific questions. > > If you are used to using SAS you might find Bob Meunchen's book "Muenchen, > R. A. (2008). R for SAS and SPSS Users (1st ed.). Springer." useful. A > shorter version is available as a pdf at http://rforsasandspssusers.com/. > The pdf is a very useful guide for anyone beginning to use R. > > --- On Mon, 7/27/09, zhijie zhang <rusers...@gmail.com> wrote: > > > From: zhijie zhang <rusers...@gmail.com> > > Subject: [R] How should i change the SAS Codes into R Codes? > > To: r-h...@stat.math.ethz.ch > > Received: Monday, July 27, 2009, 11:03 AM > > Dear R users, > > I have a SAS codes with several loops in it, and i > > hope to use R to do the > > same task. The SAS codes are as follows, > > /*to generate the dataset*/ > > DATA Single_Simulation; > > DO se=0 to 1 by 0.01; > > DO sp=0 to 1 by 0.01; > > DO DR=0 to 1 by 0.01; > > TR=(DR+sp-1)/(se+sp-1+1.0e-12); > > Adjust_Factor=TR/(DR+1.0e-12); > > OUTPUT; > > END; > > END; > > END; > > RUN; > > > > /*to select some data*/ > > DATA sampledata; > > SET Single_Simulation; > > IF DR=0.02 & sp=1; > > RUN; > > > > #I tried the following codes with R,failed > > num<-seq(0, 1, by = 0.01) > > for (se in num) { > > for (sp in num) { > > for (DR in num) { > > TR=(DR+sp-1)/(se+sp-1+1.0e-12) > > Adjust_Factor=TR/(DR+1.0e-12) > > } > > } > > } > > > > My questions are, > > 1. What is the correct codes for R to do the similar task? > > 2. Sometimes, the simulated dataset are very large, so i > > need to put the > > generated dataset in a file with large disk place, not in > > the memory, how to > > do it? SAS can do it with the 'libname' argument, do > > R have the similar > > method? > > Thanks a lot. > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > 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<http://www.r-project.org/posting-guide.html> > > and provide commented, minimal, self-contained, > > reproducible code. > > > > > __________________________________________________________________ > Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your > favourite sites. Download it now > http://ca.toolbar.yahoo.com. > [[alternative HTML version deleted]] ______________________________________________ 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.
