[mdlug] simple stats from piping numbers into R?

[Jonathan Billings]

On Thu, Apr 15, 2010 at 05:33:35PM -0400, Robert Citek wrote:
> That works, but I'd prefer to pipe the data in rather than go through
> the intermediary of a file or a named pipe.

I believe you can refer to "stdin" (I've also seen /dev/stdin) as the
file in scan:

% cat test.r 
#!/usr/bin/Rscript

num <- scan("stdin",quiet=TRUE)
summary(num)

% seq 1 100 | ./test.r 
   Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
   1.00   25.75   50.50   50.50   75.25  100.00 


-- 
Jonathan Billings <billings at negate.org>