Check out the getopt package. On Thu, Apr 30, 2009 at 10:10 PM, JiHO <jo.li...@gmail.com> wrote: > Hello everyone, > > I am writing an R script which will be provided with command line arguments > by a shell script. I read them with commandArgs() but I have an issue to > make that fool proof. > > For example, with test.R containing: > > args=commandArgs(trailingOnly=TRUE) > args > > I get: > > $ Rscript test_commandLineArgs.R 3 4 5 > [1] "3" "4" "5" > > Now, to make the input more flexible and robust, I want to pass *named* > arguments, so that the R script does not depend on the order of arguments > passed and can check which are present/absent etc. I.e. > > $ Rscript test_commandLineArgs.R foo=3 bar=4 5 > [1] "foo=3" "bar=4" > > But I am stuck on how to actually execute the code within those strings so > as to get two variables foo and bar equal to 3 and 4 respectively. I looked > at eval, deparse, substitute and all that but did not find anything. Is that > possible? > > Otherwise I will resort to parsing the arguments with strsplit but I would > much prefer and more elegant solution. > > Thank you very much in advance. Sincerely, > > JiHO > --- > http://jo.irisson.free.fr/ > > ______________________________________________ > 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. >
______________________________________________ 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.
