The R function capture.output() can be used to “collect” the output of functions such as cat() and print() to strings. For example,
> s <- capture.output({ + cat("Hello\nworld!\n") + print(pi) + }) > s [1] "Hello" "world!" "[1] 3.141593" More precisely, it captures all output sent to the standard output and returns a character vector where each element correspond to a line of output. By the way, it does not capture the output sent to the standard error, e.
