[R] Pause script at input from terminal (interactive use)

[Luigi Marongiu]

Thank you, I'll try that!

On Tue, Apr 23, 2019 at 9:22 AM PIKAL Petr <petr.pikal using precheza.cz> wrote:
>
> Hi
>
> Maybe you could think about transfering **script** to **function**.
>
> In function your construction seems to be OK.
>
> Cheers
> Petr
>
> > -----Original Message-----
> > From: R-help <r-help-bounces using r-project.org> On Behalf Of Luigi Marongiu
> > Sent: Thursday, April 18, 2019 4:11 PM
> > To: r-help <r-help using r-project.org>
> > Subject: [R] Pause script at input from terminal (interactive use)
> >
> > Dear all,
> > I am trying to write an interactive script where the user type some input from
> > the terminal. I used readline() but when I launch the file with Rscript, the
> > function is overwritten directly, there is no waiting for the user's input. For
> > instance, this example:
> >
> > VAR1 = as.numeric(readline(prompt = "Enter something -> "))
> > VAR2 = as.numeric(readline(prompt = "Enter something else -> "))
> > if(is.na(VAR1)) VAR1 = 0
> > if(is.na(VAR2)) VAR2 = "empty"
> > cat("Input was: ", VAR1, " - ", VAR2, "\n")
> >
> > is executed till the end without typing anything on terminal :
> >
> > $ Rscript test.R
> > Enter something ->
> > Enter something else ->
> > Input was:  0  -  empty
> >
> > I also tried with ',1' at the end of readline, but the effect is the same. I should
> > use the interactive() function but I am confused on its use.
> > It is possible to launch R scritps in the interactive mode in the first place? and if
> > yes, how? Or would python or julia be better choices in this case?
> > Thank you.
> > --
> > Best regards,
> > Luigi
> >
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>


-- 
Best regards,
Luigi