Did you try the example described on the ff man page? On Monday, April 2, 2012, Bond, Stephen wrote:
> Thomas, > > I tried biglm and it does not work see > > > http://r.789695.n4.nabble.com/unable-to-get-bigglm-working-ATTN-Thomas-Lumley-td2276524.html#a2278381 > > . There are other posts from people who cannot get biglm working and > others who get strange results. > Please, advise if you can help. > I have row based native code which works, but it is inconvenient as it > does not produce an R object, which can be fed to anova etc. offered it to > the developer forum, but message is still waiting for mod approval. > regards > > Stephen B > > -----Original Message----- > From: Thomas Lumley [mailto:tlum...@uw.edu <javascript:;>] > Sent: Friday, March 30, 2012 7:32 PM > To: Bond, Stephen > Cc: r-help@r-project.org <javascript:;> > Subject: Re: [R] ff usage for glm > > On Sat, Mar 31, 2012 at 9:05 AM, Bond, Stephen > <stephen.b...@cibc.com<javascript:;>> > wrote: > > Greetings useRs, > > > > Can anyone provide an example how to use ff to feed a very large data > frame to glm? > > The data.frame cannot be loaded in R using conventional read.csv as it > is too big. > > > > glm(...,data=ff.file) ?? > > > > I shouldn't think glm() will work on data that are too big to read into R. > However, bigglm() from the biglm package should work. You just need to > write a function that supplies chunks of data from ff.file as requested > (see the example on ?bigglm). I haven't used ff, but it looks from the > documentation as though chunk() will do all the difficult parts. > > -thomas > > -- > Thomas Lumley > Professor of Biostatistics > University of Auckland > > ______________________________________________ > R-help@r-project.org <javascript:;> 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. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org 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.
