[R] iterative loop with user input?

[bartjoosen]

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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> and provide commented, minimal, self-contained, reproducible code.
> 
> 

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