[R] Input to variables - help please

Steve Sidney sbsidney at mweb.co.za
Wed May 13 22:32:46 CEST 2009

Hi Luc

Many thanks for the suggestions.

I will take a look at them as soon as I can.

Are the functions standard or are they part of a function and if so which 

----- Original Message ----- 
From: "Luc Villandre" <villandl at dms.umontreal.ca>
To: "Steve Sidney" <sbsidney at mweb.co.za>
Cc: <r-help at r-project.org>
Sent: Wednesday, May 13, 2009 10:10 PM
Subject: Re: [R] Input to variables - help please

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

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