Dear Toufigh, I guess you've got a relatively large model and/or dataset - R has bumped up against its memory limit under your version of Windows (which I'm assuming you're using based on the error message). Which version are you using? 32-bit or 64-bit?
To support what Andy and Jeroen have suggested, the solutions are typically to get more RAM, upgrade R, upgrade to a 64-bit OS if you aren't already running on one, or to reduce the scope of the problem. You could accomplish the latter by running the parameter vs covariate comparisons by hand, or by doing them in smaller batches. See help(xpose.prefs-class) for details related to changing the definitions of the parameters and covariates in the Xvardef section of an Xpose data object - shortening the vectors of parameters (parms) and covariates will reduce the dimensionality or the problem. You could also try upping the memory limit (using memory.limit), but this may not work. There's a short discussion of Windows memory limits in R here: http://cran.r-project.org/bin/windows/base/rw-FAQ.html#There-seems-to-be-a-limit-on-the-memory-it-uses_0021 Hope this helps! Best Justin On Jan 13, 2012, at 9:28 AM, Toufigh Gordi wrote: > Hi, > > I am trying to plot model parameters vs. covariates suing Xpose. The data > file is rather large and I get the following message: > > In initialize(value, ...) : > Reached total allocation of 1535Mb: see help(memory.size) > 2: In initialize(value, ...) : > Reached total allocation of 1535Mb: see help(memory.size) > Error in print(parm.vs.cov(.cur.db)) : > error in evaluating the argument 'x' in selecting a method for function > 'print': Error: cannot allocate vector of size 171 Kb > > Can anybody offer a remedy? > > Thanks! > > Toufigh -- Justin Wilkins, PhD Exprimo NV Tel: +41 (0) 81 599 23 82 Mobile: +41 (0) 76 561 09 49 E-mail: justin.wilk...@exprimo.com Web: www.exprimo.com This e-mail is confidential. It is also privileged or otherwise protected by work product immunity or other legal rules. The information is intended to be for use of the individual or entity named above. If you are not the intended recipient, please be aware that any disclosure, copying, distribution or use of the contents of this information is prohibited. You should therefore delete this message from your computer system. If you have received the message in error, please notify us by reply e-mail. The integrity and security of this message cannot be guaranteed on the Internet. Thank you for your co-operation.
