On 6/15/07, Benilton Carvalho <[EMAIL PROTECTED]> wrote: > So, if those statements are inside a function, I have to make my > function to have an 'echo' argument/functionality? eg.: > > ## begin test.R > test <- function(n){ > y <- rnorm(n) > x <- rnorm(n) > z <- sample(letters[1:4], n, rep=T) > library(lattice) > bitmap("tst.png") > xyplot(y~x|z) > dev.off() > } > > test(100) > ## end test.R > > source("test.R", echo=T) > > also fails in this case...
Yes. The following will produce some output (the values of x + y and x - y) if you type it out at the R prompt: x <- rnorm(10) y <- rnorm(10) x + y x - y If you put that in a file and source it, nothing will get printed, unless you have echo=TRUE. If you define test <- function(){ x <- rnorm(10) y <- rnorm(10) x + y x - y } calling test() at the R prompt will only print x - y and not x + y, and so on. This is all standard R behaviour. If you want something to be printed irrespective of context, use print(), e.g. print(x + y) or print(xyplot(y~x|z)) This is also mentioned in the R FAQ. -Deepayan ______________________________________________ R-help@stat.math.ethz.ch 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.