R help - Oct 2001 - write a bunch of objects to files

Hello all,

I've got a bunch of objects I'd like to write to .csv files. For
example,
I have objects conveniently called

n002.csv
n001.csv
p103.csv
.
.
.

I tried a loop:
> for(i in ls(pattern="csv"))
+write.table(i, file=i, sep=",", quote=F)

That, of course, wrote out a bunch of files that contained

x
1, n002.csv

Or the like.

How can I get i in the loop above to be an object instead of a string?

Thanks

S. David White
sdavidwhite at bigfoot.com
Columbus, Ohio

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On Mon, 29 Oct 2001, David White wrote:
>
> Hello all,
>
> I've got a bunch of objects I'd like to write to .csv files. For
example,
> I have objects conveniently called
>
> n002.csv
> n001.csv
> p103.csv
> .
> .
> .
>
> I tried a loop:
>
> > for(i in ls(pattern="csv"))
> +write.table(i, file=i, sep=",", quote=F)
>
> That, of course, wrote out a bunch of files that contained
>
> x
> 1, n002.csv
>
> Or the like.
>
> How can I get i in the loop above to be an object instead of a string?
>
Use substitute():
 for(i in ls(pattern="csv"))
    eval(substitute(obj, file=fname, sep=",", quote=F),
		list(obj=as.name(i),fname=i)
         )

or get():
 for(i in ls(pattern="csv"))
	write.table(get(i), file=i, sep=",", quote=F)



	-thomas

Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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Look at ?get

-----Original Message-----
From: David White [mailto:dwhite at ling.ohio-state.edu]
Sent: Monday, October 29, 2001 3:11 PM
To: r-help at stat.math.ethz.ch
Subject: [R] write a bunch of objects to files



Hello all,

I've got a bunch of objects I'd like to write to .csv files. For
example,
I have objects conveniently called

n002.csv
n001.csv
p103.csv
.
.
.

I tried a loop:
> for(i in ls(pattern="csv"))
+write.table(i, file=i, sep=",", quote=F)

That, of course, wrote out a bunch of files that contained

x
1, n002.csv

Or the like.

How can I get i in the loop above to be an object instead of a string?

Thanks

S. David White
sdavidwhite at bigfoot.com
Columbus, Ohio

-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.
-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at
stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._.
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