New packages (tcl/tk <-> R glue + Visual Tcl)

[Guido Masarotto]

	       [Reposted by R-announce-owner because of  R-announce protection.
		Guido is subscribed under a different E-mail..]

I have made available in the 'Contributed R code | Devel' section of CRAN 
(in this moment only at Wien) two new packages:

'tcltk': this package let to create and use tcl/tk interpreters
         from R.  The tcl interpreters have an additional command 
         'R some R commands' which let to execute R commands, e.g, 
         'R a<-rnorm(100)'.  This can be used to define button's
         call-backs,... This package requires tcl/tk (tested only
         with versions 8.0 and 8.1) installed. Please, look to the
         README before installation. Status of this package is alpha. 

'vtcl': it contains only one function 'visual.tcl()' which let to exec
        Visual Tcl (http://www.neuron.com/stewart/vtcl) from R.
        Visual Tcl is a Rapid Application Development (RAD)
        environment which in particular let to build interactively the user 
        interface.  Visual Tcl is included in the package.
        This package is as stable as Visual Tcl is (which,
        IMO, means quite stable). However, it depends from tcltk.
        For this reason, it is in the devel section.

I will be happy to hear comments, suggestions, ... . 
I also hope that someone else will find the time to contribute to the 
development.

guido masarotto


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