R help - Jan 2012 - Warning message about closing a connection XXXX

Hello everyone,

After running the following code, I obtain this error message.

> mydata <- read.table(textConnection(mystring),
+    header=TRUE, sep=",",
+    row.names="id", na.strings=" ")
> mydata
Warning message:
closing unused connection 3 (mystring)

====
However, when I attempt to run read.table() again and immediately submit
the close() function (below), I obtain this message:
> close(mystring)
Error in UseMethod("close") :
  no applicable method for 'close' applied to an object of class
"character"
 ====
How can I avoid the warning message altogether?

Thank you,

Dan

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On Jan 4, 2012, at 9:53 AM, Dan Abner wrote:
> Hello everyone,
>
> After running the following code, I obtain this error message.
>
>
>> mydata <- read.table(textConnection(mystring),
> +    header=TRUE, sep=",",
> +    row.names="id", na.strings=" ")
>> mydata
> Warning message:
> closing unused connection 3 (mystring)
>
> ====>
> However, when I attempt to run read.table() again and immediately  
> submit
> the close() function (below), I obtain this message:
>
>> close(mystring)
> Error in UseMethod("close") :
>  no applicable method for 'close' applied to an object of class  
> "character"
> ====>
> How can I avoid the warning message altogether?
?closeAllConnections

The error message occurs because "mystring was never the connection  
name.

-- 

David Winsemius, MD
West Hartford, CT