On Nov 1, 2009, at 11:28 PM, Henrik Bengtsson wrote:
On Sun, Nov 1, 2009 at 7:48 PM, David Winsemius <dwinsem...@comcast.net
> wrote:
On Nov 1, 2009, at 10:16 PM, Henrik Bengtsson wrote:
path <- "data";
dir.create(path);
for (i in 1:10) {
m <- i:5;
filename <- sprintf("m%02d.Rbin", i);
pathname <- file.path(path, filename);
save(m, file=pathname);
}
That would result in each of the ten files containing an object
with the
same name == "m". (Also on my system R data files have type Rdta.)
So I
thought what was requested might have been a slight mod:
path <- "~/";
dir.create(path);
for (i in 1:10) {
assign( paste("m", i, sep=""), i:5)
filename <- sprintf("m%02d.Rdta", i)
pathname <- file.path(path, filename)
obj =get(paste("m", i, sep=""))
save(obj, file=pathname)
}
Then a more convenient solution is to use saveObject() and
loadObject() of R.utils. saveObject() does not save the name of the
object save.
The OP asked for this outcome :
" I would like to save m as m1, m2, m3 ...,
to file /home/data/m1, /home/data/m2, home/data/m3, ..."
If you want to save multiple objects, the wrap them up
in a list.
I agree that a list would makes sense if it were to be stored in one
file , although it was not what requested. But wouldn't that require
assign()-ing a name before list()-wrapping?
I suppose we ought to mention that the use of assign to create a
variable is a FAQ ... 7.21? Yep, I have now referred to it a
sufficient number of times to refer to it by number.
http://cran.r-project.org/doc/FAQ/R-FAQ.html#How-can-I-turn-a-string-into-a-variable_003f
--
David
loadObject() does not assign variable, but instead return
them. Example:
library("R.utils");
x <- list(a=1,b=LETTERS,c=Sys.time());
saveObject(x, file="foo.Rbin");
y <- loadObject("foo.Rbin");
stopifnot(identical(x,y));
So, for the original example, I'd recommend:
library("R.utils");
path <- "data";
mkdirs(path);
for (i in 1:10) {
m <- i:5;
filename <- sprintf("m%02d.Rbin", i);
saveObject(m, file=filename, path=path);
}
and loading the objects back as:
for (i in 1:10) {
filename <- sprintf("m%02d.Rbin", i);
m <- loadObject(filename, path=path);
print(m);
}
/Henrik
--
David.
/H
On Sun, Nov 1, 2009 at 6:53 PM, jeffc <h...@andrew.cmu.edu> wrote:
Hi,
I would like to save a few dynamically created objects to disk. The
following is the basic flow of the code segment
for(i = 1:10) {
m = i:5
save(m, file = ...) ## ???
}
To distinguish different objects to be saved, I would like to
save m as
m1,
m2, m3 ..., to file /home/data/m1, /home/data/m2, home/data/m3, ...
I tried a couple of methods on translating between object names and
strings
(below) but couldn't get it to work.
https://stat.ethz.ch/pipermail/r-help/2008-November/178965.html
http://tolstoy.newcastle.edu.au/R/help/04/08/2673.html
Any suggestions would be appreciated.
thanks
Hao
--
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______________________________________________
R-help@r-project.org mailing list
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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.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
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.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
______________________________________________
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.
