Hello, When I try to read Affymetrix data using widget exactly per "How to load Affymetrix data," I get the following error. I can load the data just fine using "ReadAffy()". I am using Windows XP, R version 1.6.1, and downloaded and installed Biobase and Affy packages. Any suggestions? Thank you! Dan Handley > data <- ReadAffy(widget=TRUE) Loading required package: tkWidgets Loading required package: tcltk Error in firstlib(which.lib.loc, package) : TCL_LIBRARY is not set Error in eval(expr, envir, enclos) : tcl/tk package `tcltk' not available -- forget about `tkWidgets'! >

Hi Dan ... > > data <- ReadAffy(widget=TRUE) > Loading required package: tkWidgets > Loading required package: tcltk > Error in firstlib(which.lib.loc, package) : > TCL_LIBRARY is not set > Error in eval(expr, envir, enclos) : tcl/tk package `tcltk' not > available -- forget about `tkWidgets'! Assuming you have Tcl/Tk installed on your system (if you do not, you need to do this step), you need to set the TCL_LIBRARY environment variable to point to your Tcl/Tk installation in Windows. -J