? Hi, Can someone help me on the following problem? I have nearly 103,000 records with 22 variables (some are factors). When I ran a stepwise glm on the data set, the R program stops with an error message "Error: cannot allocate vector of size 171.3Mb." I have an R 2.12.0 on my PC (Windows XP) with a maximum 4Gb RAM. Thanks Siddeek
limit on vector size allocation
2 messages · Siddeek, Shareef (DFG), David Winsemius
On Aug 29, 2012, at 10:23 AM, Siddeek, Shareef (DFG) wrote:
Hi, Can someone help me on the following problem? I have nearly 103,000 records with 22 variables (some are factors). When I ran a stepwise glm on the data set, the R program stops with an error message
Stepwise methods are statistically suspect. The fact that they are easy to do in SAS or SPSS is not evidence against the prior sentence.
"Error: cannot allocate vector of size 171.3Mb." I have an R 2.12.0 on my PC (Windows XP) with a maximum 4Gb RAM.
You appear to have the machine resources to handle the problem, but probably have too much other "stuff" (running programs, open windows, etc) in your system at this time that is occupying memory, this preventing R from having contiguous memory that can hold your data object. You should exit R, update R to a current version, restart your computer, do not run any other applications, ... restart R and redo this analysis.
David Winsemius, MD Alameda, CA, USA