R help - Feb 2004 - would be nice ...

if R had something like

 > python -c "print(sum([1,2,3]));print(3*2)"
6
6

but I guess the only way to do this is by writing the string to
a tmp file and then doing something like "R CMD BATCH --quiet"
on the tmp file

I would like to use this for an R service, which allows you to
select any string in any application and replace it by its
R evaluation

==Jan de Leeuw; Professor and Chair, UCLA Department of Statistics;
Editor: Journal of Multivariate Analysis, Journal of Statistical  
Software
US mail: 8130 Math Sciences Bldg, Box 951554, Los Angeles, CA 90095-1554
phone (310)-825-9550;  fax (310)-206-5658;  email: deleeuw at stat.ucla.edu
homepage: http://gifi.stat.ucla.edu
   
------------------------------------------------------------------------ 
-------------------------
           No matter where you go, there you are. --- Buckaroo Banzai
                    http://gifi.stat.ucla.edu/sounds/nomatter.au

>>>>> "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

    Jan> I would like to use this for an R service, which allows
    Jan> you to select any string in any application and replace
    Jan> it by its R evaluation

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

On Tue, 24 Feb 2004, Martin Maechler wrote:
>
> 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
>
You can use --slave to suppress the input

[al:~] thomas% echo "print(sum(1:3))" | R --slave
[1] 6



	-thomas

Jan de Leeuw <deleeuw at stat.ucla.edu> wrote:
	if R had something like
	
	 > python -c "print(sum([1,2,3]));print(3*2)"
	6
	6
	
What's wrong with

    % echo "print(sum(c(1,2,3))); print(3*2)" | R --no-save -q
    > print(sum(c(1,2,3))); print(3*2)
    [1] 6
    [1] 6
    >