[R] loading packages - mac user

[Thomas Lumley]

On Tue, 18 Oct 2005, Cormac Lawler wrote:

> Hi,
> I'm using a Mac, I've downloaded R (base), and I'm trying to download
> the package R Commander. I thought I had already done this (both from
> the web and from within R) but it doesn't seem to be working - it's
> not there as a "search()" reveals.

You need to load it (with the Package Manager) as well as download it, but 
that isn't the only isuue

>However, there are plenty of files
> on my system linked with Rcmdr - located in
> HD>Library>Frameworks>R.framework>Versions>2.1.1>Resources>Library>Rcmdr.
> Is it simply in the wrong location to use it? The other possibility is
> that I keep getting a tcltk error whenever I try to load up the
> package from the Package Manager from within R - and when I try to
> upload the tcltk package, this also gives the same error [1].

Yes, Rcmdr needs the tcltk package, so this would explain the problem. The 
error message below suggests that Tcl/Tk is not on your system.

  I also
> get a "Couldn't launch application" error whenever I try to launch the
> X11.app.

Both for this and for working out why Tcl/Tk isn't installed you might be 
better off trying R-sig-mac rather than r-help

 	-thomas

> This is probably so basic it's staring me in the eyes, but I need your
> help please. I'd be happy to give any extra info you need.
>
> Thanks
> Cormac
>
> [1] Loading required package: tcltk
> Loading Tcl/Tk interface ... Error in dyn.load(x, as.logical(local),
> as.logical(now)) :
> 	unable to load shared library
> '/Library/Frameworks/R.framework/Resources/library/tcltk/libs/tcltk.so':
>  dlcompat: dyld: /Applications/R.app/Contents/MacOS/R can't open
> library: /usr/local/lib/libtk8.4.dylib  (No such file or directory,
> errno = 2)
> In addition: Warning messages:
> 1: cannot create HTML package index in: make.packages.html()
> 2: cannot create HTML package index in: make.packages.html()
> Error: .onLoad failed in 'loadNamespace' for 'tcltk'
> Error: package 'tcltk' could not be loaded
>
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Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle