Hello, I am trying to merge two very large data sets, via
pubbounds.prof <- merge(x=pubbounds,y=prof,by.x="user",by.y="userid",all=TRUE,sort=FALSE) which gives me an error of Error: cannot allocate vector of size 2962 Kb I am reasonably sure that this is correct syntax. The trouble is that pubbounds and prof are large; they are data frames which take up 70M and 11M respectively when saved as .Rdata files. I understand from various archive searches that "merge can't handle that," because merge takes n^2 memory, which I do not have. My question is whether there is an alternative to merge which would carry out the process in a slower, iterative manner...or if I should just bite the bullet, write.table, and use a perl script to do the job. Thankful as always, Adam D. I. Kramer ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
