R scripts and parameters
Try this:
A <- 1
B <- 2
C <- 3
source("myfile.R")
Now the code in myfile can access A, B and C.
On Tue, Feb 17, 2009 at 10:55 AM, <mauede at alice.it> wrote:
A couple of weeks ago I asked how it is possible to run an R script (not a function) passing some parameters. Someone suggested the function "commandArgs()". I read the on-line help and found no clarifying example. Therefore I do not know how to use it appropriately. I noticed this function returns the pathname of the R executable which is not what I need. I meant to ask if it is possible to open an R session and launch a script passing parameters that the script can retrieve and use itself. Just like in C I can run a program and call it with some arguments
Example_Prog A B C
The program "Example_Prog" can acess its own arguments through the data structures "argc" an "argv".
How can I launch an R script simulating the above mechanism ?
Shall I use source ("script-name") ?
Where are the arguments to be passed, as part of the source call ?
Is the function "commandArgs" to be places as one of the first code lines of the script in order to access its own arguments ?
Is there any "commandArgs" usage example ?
Thank you very much in advance.
Maura
tutti i telefonini TIM!
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