[R] would be nice ...

[Dirk Eddelbuettel]

On Tue, Feb 24, 2004 at 10:07:32AM +0100, Martin Maechler wrote:
> >>>>> "Jan" == Jan de Leeuw <deleeuw at stat.ucla.edu>
> >>>>>     on Tue, 24 Feb 2004 00:52:51 -0800 writes:
> 
>     Jan> if R had something like
>     >> python -c "print(sum([1,2,3]));print(3*2)"
>     Jan> 6 6
> 
>     Jan> but I guess the only way to do this is by writing the
>     Jan> string to a tmp file and then doing something like "R
>     Jan> CMD BATCH --quiet" on the tmp file
> 
> Well, a bit better (with a shell prompt "%") is
> 
>     % echo "print(sum(c(1,2,3)));print(3*2)" | R --quiet --vanilla
> 
>     > print(sum(c(1,2,3)));print(3*2)
>     [1] 6
>     [1] 6
>     > 
> 
> or (slightly nicer)
> 
>     % echo "sum(c(1,2,3)); 3*2" | R --quiet --vanilla
>     > sum(c(1,2,3)); 3*2
>     [1] 6
>     [1] 6
>     > 
> 
> but it still echoes the input by default

Not with --slave:

edd at chibud:~> echo "sum(c(1,2,3)); 3*2" | R --slave
[1] 6
[1] 6

I would be pretty trivial to filter the "^[1] " out.

Dirk

-- 
The relationship between the computed price and reality is as yet unknown.  
                                             -- From the pac(8) manual page