[R] tcltk for windows

[JOHNATHAN LI]

Hi,

I installed R-1.3.1 for Windows and tried to use tcltk interface and got an error message like 
> library(tcltk)
Error in firstlib(which.lib.loc, package) : 
        TCL_LIBRARY is not set
Error in library(tcltk) : .First.lib failed

I then proceed to install tcltk for windows assuming the problem has something to do with it. The same message appears after installation of tcltk. 

Any suggestion is appreciated.

Jonathan
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