[R] write.table equivalent for lists?

[Ivan Calandra]

Hi,

If I understood you correctly, you can use saveObject()/loadObject() 
from package R.utils, like this:

library(R.utils)
saveObject(x, "x.Rbin")
rm(x)
y <- loadObject("x.Rbin")

HTH,
Ivan

Le 1/10/2011 15:24, Rainer M Krug a écrit :
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> 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)
>
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>
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-- 
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
Abt. Säugetiere
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calandra at uni-hamburg.de

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