[R] Still find the error in loading the tk-library

Prof Brian Ripley ripley at stats.ox.ac.uk
Tue Oct 31 14:18:06 CET 2000

> Date: Tue, 31 Oct 2000 20:19:31 +0800
> From: "Patrick Yuk-lun Ma M.D. / BV5DD" <bv5ddma at mail.educities.edu.tw>
> Dear Sir,
>     I do find the same error in the following, may someone help me how
> to solve it when I run the demo(tkttest)
>  demo(tkttest)
>         demo(tkttest)
>         ---- ~~~~~~~
> Type  <Return>   to start :
> > require(tcltk) || stop("tcltk support is absent")
> Loading required package: tcltk
> Error in firstlib(which.lib.loc, package) :
>         TCL_LIBRARY is not set

I strongly suspect you are on Windows, although you do not say so.
If so, CHANGES says:

   Optional support for the Tcl/Tk interface.  To use this you need to
   install tcl831.exe from dev.scriptics.com, and you will need the Tcl
   and Tk dlls in your path.  Also, you need to set the environment
   variable TCL_LIBRARY, to something like c:/Program Files/Tcl/lib/tcl8.3.
   The demos(tk*) will work on Windows.

(tcl832.exe will also work.)  That should answer your problem

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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