[R] How to source a part of the file

[Gabor Grothendieck]

On Fri, Mar 11, 2011 at 4:41 PM, Paul Y. Peng <pywpeng at gmail.com> wrote:
> I have a text file of R commands. Some times I only want to run a few lines
> of the R commands in an existing R session and wonder whether there is a
> simple way to do this.
>
> To run a few lines in a new session of R, I could use sed to pick up the
> lines from the file and pipe them into R.
>
> source() does not allow me to specify which lines to be included/excluded.
> Is there any function that is similar to source() but allows me to specify
> lines included/excluded?
>

To just source lines 15 through 16 try this:

source(pipe("sed -n 15,16p myfile.R"))


-- 
Statistics & Software Consulting
GKX Group, GKX Associates Inc.
tel: 1-877-GKX-GROUP
email: ggrothendieck at gmail.com