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I should have saved the messages about this but I didn't. Can someone remind me of what function or object to check from within a function to determine if you are running R? I need to make some changes in code according to whether I am running it under R or under S and I would prefer to keep one source tree. Thomas Lumley: I read your web page on porting S code to R. It looks very good.

...he future, we expect package authors will be able to create a single package that will run in both environments. The actual package system would be a port of the R package system code, which furthers the exchangeability of S-PLUS and R code. The ported code will be available in a GPL library called Rcompat To demonstrate that R packages can now be ported to S-PLUS, we have - with the permissions of the authors - ported several R packages to run as S-PLUS packages. We are planning to make these packages available for download from an Insightful-hosted website (called csan.insightful.com for consiste...

...he future, we expect package authors will be able to create a single package that will run in both environments. The actual package system would be a port of the R package system code, which furthers the exchangeability of S-PLUS and R code. The ported code will be available in a GPL library called Rcompat To demonstrate that R packages can now be ported to S-PLUS, we have - with the permissions of the authors - ported several R packages to run as S-PLUS packages. We are planning to make these packages available for download from an Insightful-hosted website (called csan.insightful.com for consiste...

Pat Burns makes a good point. -Peter -------- Original Message -------- Subject: Re: [R] Using seq_len() vs 1:n Date: Fri, 12 Feb 2010 09:01:20 +0000 From: Patrick Burns <pburns at pburns.seanet.com> To: Peter Ehlers <ehlers at ucalgary.ca> References: <4B746AEF.10900 at ucalgary.ca> If you want your code to be compatible with S+, then 'seq_len' isn't going to work.