Piping stdin to R

Question

I am having trouble piping stdin to an R script.

Here is my toy script test.R:

#!/usr/bin/env Rscript
while(length(line <- readLines(         


        

Answer 1

This is the easiest I've found (assuming numeric input):

x <- scan(file("stdin")

you can test it with:

$ echo -e "1\n2\n3" | R -s -e 'x <- scan(file("stdin")); summary(x)'
Read 3 items
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
    1.0     1.5     2.0     2.0     2.5     3.0