[R] plotting to stdout

[Dirk Eddelbuettel]

On Fri, Sep 07, 2007 at 02:27:00PM -0400, Duncan Murdoch wrote:
> On 9/7/2007 2:15 PM, Gene Selkov wrote:
> > Thanks a ton, Duncan!
> > 
> > So I have verified that this line works:
> > 
> >    echo "postscript(file=\"\", command=\"cat\"); plot(0)" | r --vanilla --slave
> > 
> > Wonderful! (albeit a little unobvious)
> 
> I would include an explicit "dev.off()" after the plotting; I'm not sure 
> all devices guarantee a clean shutdown when R quits.

And for the record, both littler and Rscript can do that without the
need for double quotes, at least under Linux.  E.g. both

$ r -e 'postscript(file="", command="cat"); plot(0)' | head 
$ Rscript -e 'postscript(file="", command="cat"); plot(0)' | head

provide the same output (of the beginning of the postscript output).
Our r is as usual somewhat faster, not that this matters in this
non-repeat context.

Dirk

-- 
Three out of two people have difficulties with fractions.