On May 22, 2012, at 1:47 PM, Dan Tenenbaum <[email protected]> wrote:
> On Tue, May 22, 2012 at 10:34 AM, Henrik Bengtsson <[email protected]> > wrote: >> Hi, >> >> I'd like to spawn of a new R process from within R using system(), >> e.g. system("R -f myScript.R"). However, just specifying "R" as in >> that example is not guaranteed to work, because "R" may not be on the >> OS's search path. >> >> What is the best way, from within a running R, to infer the command >> (basename or full path) for launching R in way that it works on any >> OS? I came up with the following alternatives, but I'm not sure if >> they'll work everywhere or not: >> >> 1. Rbin <- commandArgs()[1]; >> >> 2. Rbin <- file.path(R.home(), "bin", "R"); >> >> Other suggestions that are better? > > Rbin <- file.path(Sys.getenv("R_HOME"), "bin", "R") > That is certainly worse, not better. 1. doesn't work because it may be a relative path. 2. Sounds pretty good - since the environment will be set by the current R. > Dan > > >> >> /Henrik >> >> ______________________________________________ >> [email protected] mailing list >> https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
