Hi, I am trying to use the Affy package on a windows XP PC with 512 Mo. I m loading 17 U133A chips. I am trying to use widget and here is what I get: Loading required package: tkWidgets Loading required: 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' ! When I dont use widget everything is about to be fine since in some operations, for instance when I try to use the hist function, I get this kind of message: Error: cannot allocate vector of size 67328 Kb In addition: Warning Message: Reached total allocation of 511Mb: see help(memory.size) The help does not help me that much, maybe because of my limited understanding of the process or of my poor english but maybe some of you can do better than the help file !? Thanks Philippe [[alternate HTML version deleted]]

> Loading required: 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' ! Please see the R Windows FAQ available at www.r-project.com, question 3.6. > The help does not help me that much, maybe because of my limited > understanding of the process or of my poor english but maybe some of you can > do better than the help file !? Yes, the function is trying to access package tkWidgets which is in turn trying to access package tcltk, which requires some setup on a Windows system. -J