[R] Input to variables - help please

Luc Villandre villandl at dms.umontreal.ca
Wed May 13 22:10:28 CEST 2009


Steve Sidney wrote:
> Dear list
>
> I have managed to write a short program to evaluate data which is 
> inputted
> from a csv file using the following
>
> x = read.csv("wms_results.csv", header=TRUE)
>
> All works fine but since I have a number of similar data files which have
> different names, I would like the program to allow me to input the file
> name, rather than having to edit the program.
>
>> From the documentation I am unclear how to replace the "filename.csv" 
>> with a
> string varaiable so that from the keyboard I can input the name.
>
> Also which command can I use to output some text to the monitor as a 
> prompt
>
> Any help would be great and apologies for such a simple question. Thanks
>
> Regards
> Steve
>
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Hi Steve,

I suspect the choose.files() function could be useful in this setting. 
Also, I've read on this forum that message() or cat() were commonly used 
for a prompt (all taken from Prof. Brian Ripley's reply to "Prompt comes 
too late").

Hope this helps,

-- 
*Luc Villandré*
/Biostatistician
McGill University Health Center -
Montreal Children's Hospital Research Institute/



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