serialize() and unserialize() in the base package should do the job also and are usually quite a bit faster than dput() and dget(). However, the format is not easily read by other programs.
Bill Dunlap Spotfire, TIBCO Software wdunlap tibco.com > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Greg Snow > Sent: Monday, January 10, 2011 12:59 PM > To: Rainer M Krug; R-help > Subject: Re: [R] write.table equivalent for lists? > > How about dput and dget in the base package? > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > > project.org] On Behalf Of Rainer M Krug > > Sent: Monday, January 10, 2011 7:24 AM > > To: R-help > > Subject: [R] write.table equivalent for lists? > > > > -----BEGIN PGP SIGNED MESSAGE----- > > Hash: SHA1 > > > > Hi > > > > I am writing simulations in R, and quite regularly, I have to save > > lists > > and objects to HDD and load it later again. > > > > So I am wondering: why is there no function to write lists > (and S3, S4 > > objects) onto HDD WITHOUT keeping the name? What I mean is: > > > > For data.frames I can use > > > > x <- data.frame(x = runif(10)) > > write.table(x, "x.txt) > > rm(x) > > > > y <- read.table("x.txt") > > > > to load it into y. > > > > But for lists and S3, S4 objects, I have to use save() and load(): > > > > x <- list(x=1:10, y=letters(1:10)) > > save(x, file="x.rdata") > > rm(x) > > > > load("x.rdata") #1 > > y <- x #2 > > rm(x) #3 > > > > to load it into y. > > I don't mind the binary of save - what I am really missing > is a command > > which combines lines #1, #2 and #3. > > > > I know - I could write my own > > > > save.list <- function(x, file) { > > save(s, file=file) > > } > > > > load.list <- function(file) { > > load(file) > > return(x) > > } > > > > which I could then use as: > > > > x <- list(x=1:10, y=letters(1:10)) > > save.list(x, "test.rdata") > > > > rm(x) > > > > y <- load.list("test.rdata") > > > > but: why is there not such a function? Am I missing something here? > > > > Cheers, > > > > Rainer > > > > - -- > > Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation > > Biology, UCT), Dipl. Phys. (Germany) > > > > Centre of Excellence for Invasion Biology > > Natural Sciences Building > > Office Suite 2039 > > Stellenbosch University > > Main Campus, Merriman Avenue > > Stellenbosch > > South Africa > > > > Tel: +33 - (0)9 53 10 27 44 > > Cell: +27 - (0)8 39 47 90 42 > > Fax (SA): +27 - (0)8 65 16 27 82 > > Fax (D) : +49 - (0)3 21 21 25 22 44 > > Fax (FR): +33 - (0)9 58 10 27 44 > > email: rai...@krugs.de > > > > Skype: RMkrug > > -----BEGIN PGP SIGNATURE----- > > Version: GnuPG v1.4.10 (GNU/Linux) > > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > > > iEYEARECAAYFAk0rFocACgkQoYgNqgF2egoLMgCfQmZFnLx4Olkb55DtLKmuRXYY > > yvoAnieTY3/CsGM9pqyoownLxgeuaDrd > > =VOFu > > -----END PGP SIGNATURE----- > > > > ______________________________________________ > > 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. > > ______________________________________________ > 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. > ______________________________________________ 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.