Re: [R] iterative loop with user input?

From: bartjoosen <bartjoosen_at_hotmail.com>
Date: Fri, 04 Apr 2008 01:54:34 -0700 (PDT)

Your example runs fine at my pc, except from the readLines("File with 30 ....) part.

But this is probably a striped code, so maybe you should take a look at flush.console().

Bart

Christopher Marcum wrote:
>
> Hello R-Users,
>
> I would like to use an iterative loop to collect user input from within a
> function. I'm sure that this would be some combination of "for","break",
> and "next" but have not been able to get the syntax down.
>
> I would like to print some text to the screen at each step in the loop,
> ask the user for input which is saved in an object, and then advance the
> loop.
>
> Here is an example:
>
> #anchor is a file with unique ids
> anchor<-rep(1:30)
> anchor<-paste(anchor,"uid",sep="")
>
> #codelist is where I would like to store user input
> codelist<-NULL
>
> for(i in 1:30) {
> #tell the user which ID is being coded
> print(paste("You are coding unique ID",anchor[i],sep=": "))
> #Read a line from a text file:
> print(readLines(file="file_with_30_lines.txt",warn=F)[i])
> #Ask the user for input
> codelist[i]<-readline(paste("Select one of the following: \n \t please
> enter 1, 2, or 3: \n Enter Your Response HERE: ",sep=""))
> }
>
> Ideally, loop should work from inside a function.
>
> Any tips? Thanks in advance for your time and patience.
>
> Best,
> Chris Marcum
> Sociology/Cal(it)^2
> University of California-Irvine
>
> ______________________________________________
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> PLEASE do read the posting guide
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>
>

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Received on Fri 04 Apr 2008 - 08:57:16 GMT

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