Simply gooling for "writing ARFF file in R" gave the following as first hit, which is right on the WEKA page:
Miscellaneous code [...] Function for reading ARFF files into the R statistical package (kindly provided by Dr Craig Struble). Function for writing ARFF files from the R statistical package (kindly provided by Nigel Sim). http://www.cs.waikato.ac.nz/~ml/weka/example_code/writearff.R I have not tried it myself. Andy PS: AFAIK, ARFF is not a binary format, but simply csv with header information. > From: David Ruau > > Thanks for your answers, > I need to print this data frame into a .csv file to import it in WEKA. > Do you have better solution? > I quite a new user of WEKA I don't know if you can give it a binary > file. I think you can but it will be complicated... > > David > > On Jul 20, 2005, at 15:07, jim holtman wrote: > > > You might have better luck if you have a loop that is processing one > > row at a time. That means you will have to determine what the > > formatting should be. With write.table it is trying to process the > > entire array at once to determine the best formatting and > it taking a > > lot of memory (my guess at least 500MB). > > > > What are you going to do with a text file that large? Can you write > > it out in binary if you are reading it in with another program? If > > you are going to reread it with R, then 'save' would be a better > > choice. > > > > On 7/20/05, David Ruau <[EMAIL PROTECTED]> wrote: > >> Hi All, > >> > >> I want to print a square matrix of 7000 x 7000 into a text > file. But I > >> got a error after few hours of computation... > >> -------- > >>> write.table(MyDistMxDF, file = "temp.csv", sep=",", quote=F) > >> *** malloc: vm_allocate(size=8421376) failed (error code=3) > >> *** malloc[2889]: error: Can't allocate region > >> Error: vector memory exhausted (limit reached?) > >> *** malloc: vm_allocate(size=8421376) failed (error code=3) > >> *** malloc[2889]: error: Can't allocate region > >>> q() > >> *** malloc: vm_allocate(size=8421376) failed (error code=3) > >> *** malloc[2889]: error: Can't allocate region > >> *** malloc: vm_allocate(size=8421376) failed (error code=3) > >> *** malloc[2889]: error: Can't allocate region > >> Error in lazyLoadDBfetch(key, datafile, compressed, envhook) : > >> internal error in decompress1 > >>> > >> ------ > >> I am running R 2.0.1 on MacOS X 10.3 with 1Gb ram. > >> How could I write such a matrix to a text file. > >> > >> David > >> > >> ______________________________________________ > >> 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 > >> > > > > > > -- > > Jim Holtman > > > > What the problem you are trying to solve? > > > > > > ______________________________________________ > 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 > > > ______________________________________________ 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
