[BioC] question

[James Wettenhall]

Hi Tina,

Using the widget=TRUE option requires the tcltk package
to be installed and functioning in R.

What happens if (after loading a new R session) you type:
library(tcltk)
OR
capabilities("tcltk")
?
OR
library(tkWidgets)

If these all work OK (without errors), then maybe an affy
function just forgot to make sure the tcltk package is loaded,
in which case just make sure you have typed "library(tkWidgets)"
(which loads "tcltk") before you run "affy".  But I suspect you
may have a problem with your tcltk installation.

Please let us know which operating system you are using
(Windows, Mac OSX, Linux, ...) and which version of R you are
running:
Type "version" at the R prompt.

And which version of the "affy" package and the "tkWidgets"
package you are running, e.g. with

packageDescription("affy")
packageDescription("tkWidgets")

If none of these things help to solve the problem, then perhaps
Jianhua Zhang (author of tkWidgets) can help.

It is possible that you installed R without tcltk (e.g. using
the "mini" installer for Windows).  Or it's possible in
Linux/Unix that your R installation method may not have found
the Tcl/Tk libraries in the correct directory,
e.g. /usr/lib/ or /usr/share/ or wherever.

Regards,
James