[R] using var from bash in R script

[David Winsemius]

On Jan 4, 2012, at 4:08 PM, dood wrote:

> Dear R users,
>
> This probably a really noob question, but I'm stuck. I'd like to  
> pass some
> variables from bash to R as strings. I can successfully pass  
> variables using
> commandArgs(), the problem is that I end up with an array.

Huh? You should be getting a character vector.

> So, for example:
>
>> Args <- commandArgs(TRUE)
>> Args
> [1] "one"   "two"   "three"
>
> Now, it just so happens that "one", "two", "three" are names of  
> columns


.... columns? Of what? Or perhaps ... in what? Does this "what" have a  
name in the R workspace?

> that
> I'd like to work with. I'd like to do something like this:
>
>> print(summary(lm(Args[1] ~ Args[2])))

No 'data' argument to lm. You would be getting better answers if you  
provided more specifics.

>
> But, this doesn't work. The alternative would be to let bash write a  
> number
> of R-scripts and then rm them when done, but that seems like an  
> unnecessary
> step.
>
> Can this be done?

require(fortunes)
fortune("Yoda")

>
> Thanks
>
>
>
> --
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>
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David Winsemius, MD
West Hartford, CT