On Tue, Feb 7, 2012 at 10:50 PM, ilai <ke...@math.montana.edu> wrote: > Ahh, > I think I'm getting it now. Well, readlines() is not going to work for > you. The help file ?readline clearly states "In non-interactive use > the result is as if the response was RETURN and the value is ‘""’." > The implication is you cannot use it to "insert" different answers as > if you were really there. > How about using eval() instead? You will need to make the answers a > named list (or just assigned objects). > > test <- expression({ > if(a>2) print('+') > else print('I got more') > b <- b+3 # reassign b in the environment > print(b) > print(c) > d^2 > }) > dump('test',file='myTest.R') ; rm(test) > > # make the answers.R file: > > a=5 ; b=2 ; c=2 ; d=3 > source("myTest.R") > eval(test) > > # Now, from the terminal R CMD BATCH answers.R out.R > # And here is my $ cat out.R > ... flushed >> a=5 ; b=2 ; c=2 ; d=3 >> source("myTest.R") >> eval(test) > [1] "+" > [1] 5 > [1] 2 > [1] 9 >> >> proc.time() > user system elapsed > 0.640 0.048 0.720 > > Would this work? > Elai > > > > > On Tue, Feb 7, 2012 at 4:05 PM, Gang Chen <gangch...@gmail.com> wrote: >> Suppose I create an R program called myTest.R with only one line like >> the following: >> >> type <- as.integer(readline("input type (1: type1; 2: type2)? ")) >> >> Then I'd like to run myTest.R in batch mode by constructing an input >> file called answers.R with the following: >> >> source("myTest.R") >> 1 >> >> When I ran the following at the terminal: >> >> R CMD BATCH answer.R output.Rout >> >> it failed to pick up the answer '1' from the 2nd line in answers.R as >> shown inside output.Rout: >> >>> source("myTest.R") >> input type (0: quit; 1: type1; 2: type2)? >>> 1 >> [1] 1 >> >> What am I missing here? >> >> Thanks in advance, >> Gang >> >> ______________________________________________ >> 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.