Re: [R] Simple question about export
Dear Michael,
If your dataset is large, you may consider my package savetable at
www.obs.ee/~siim/savetable_0.2.1.tar.gz
This is more memory-efficient than write.table. Unfortunately, I have
not a window binary.
Best wishes,
Ott
| Date: Wed, 12 Mar 2003 05:13:04 -0800 (PST)
| From: Michael Miettinen <[EMAIL PROTECTED]>
| Hi,
|
| Sorry about making this stupid question, but I did not
| find the answer from documentation.
|
| I managed to read my spss .sav file into the R, no
| problem. Next I would like to write this data to a
| file in ascii-format. I tried to use write.table and I
| got no error messages, but no file either. What is the
| right way to make it?
|
| At least write.table("c:\foo\data.dat") does not
| work..
|
| Thanks in advance!
|
| Michael
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Re: [R] Simple question about export
Michael Miettinen wrote:
Hi,
Sorry about making this stupid question, but I did not
find the answer from documentation.
I managed to read my spss .sav file into the R, no
problem. Next I would like to write this data to a
file in ascii-format. I tried to use write.table and I
got no error messages, but no file either. What is the
right way to make it?
At least write.table("c:\foo\data.dat") does not
work..
Thanks in advance!
Michael
Under Windows, you need to specify files paths using either "\\" or "/"
as the separator. This is referred to in R Windows FAQs 2.13 and 4.1.
Also, at least in the example you give above, you did not specify the
name of the data frame that you want to export, which is the first
argument to write.table().
Presuming that your dataframe is called 'spss" use:
write.table(spss, "c:\\foo\\data.dat")
or
write.table(spss, "c:/foo/data.dat")
See ?write.table, the R Windows FAQ and the R Data Import/Export
documentation.
Regards,
Marc Schwartz
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Re: [R] Simple question about export
- Original Message -
From: "Michael Miettinen" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, 12 March, 2003 2:13 PM
Subject: [R] Simple question about export
> Hi,
>
> Sorry about making this stupid question, but I did not
> find the answer from documentation.
>
> I managed to read my spss .sav file into the R, no
> problem. Next I would like to write this data to a
> file in ascii-format. I tried to use write.table and I
> got no error messages, but no file either. What is the
> right way to make it?
>
> At least write.table("c:\foo\data.dat") does not
>From the rw-FAQ: Backslashes have to be doubled in R character strings:
write.table(x, "c:\\foo\\data.dat")
or use a forward slash:
write.table(x, "c:/foo/data.dat")
where x is your data object
Mathieu Roelants, Project Vlaamse Groeicurven[EMAIL PROTECTED]
Laboratorium Antropogenetica Vrije Universiteit Brussel, Pleinlaan 2, B-1050
Brussel Tel.+Fax 02/629.34.07
Laboratory of Anthropogenetics - University of Brussels, Pleinlaan 2, B-1050
Brussels (Belgium) Tel.+Fax + 32 2 629 34 07
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RE: [R] Simple question about export
If that is what you tried, then you didn't supply the object to the
write.table function.
e.g. if your data.frame is called mydata in R you need
write.table(mydata,"c:/foo/data.dat")
The file is ascii. Note also that you either have to use forward slashes (as
above) or double backslashes
write.table(mydata,"c:\\foo\\data.dat")
R doesn't do the expected thing with single backslashes as you wrote it.
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Michael Miettinen
Sent: 12 March 2003 15:13
To: [EMAIL PROTECTED]
Subject: [R] Simple question about export
Hi,
Sorry about making this stupid question, but I did not
find the answer from documentation.
I managed to read my spss .sav file into the R, no
problem. Next I would like to write this data to a
file in ascii-format. I tried to use write.table and I
got no error messages, but no file either. What is the
right way to make it?
At least write.table("c:\foo\data.dat") does not
work..
Thanks in advance!
Michael
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RE: [R] Simple question about export
Well, you did not specify the object to save in write.table(). Suppose
you want to save the following:
x <- matrix( c(1:25), nrow=5)
write.table(x, file="c:/my.output.file.txt")
If all goes well, you should see the prompt without any message.
Also use "/" rather than "\" as it is reserved for escape sequences.
You might also consider setting the option sep="\t" and quote=FALSE to
make it truly tab-delimited file. There is also row.names, col.name
option. Try reading the R Data Import/Export or write.table() again.
-Original Message-
From: Michael Miettinen [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 12, 2003 9:13 PM
To: [EMAIL PROTECTED]
Subject: [R] Simple question about export
Hi,
Sorry about making this stupid question, but I did not
find the answer from documentation.
I managed to read my spss .sav file into the R, no
problem. Next I would like to write this data to a
file in ascii-format. I tried to use write.table and I
got no error messages, but no file either. What is the
right way to make it?
At least write.table("c:\foo\data.dat") does not
work..
Thanks in advance!
Michael
=
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+358 40 849 1140
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Re: [R] Simple question about export
On Wed, 12 Mar 2003, Michael Miettinen wrote:
> Sorry about making this stupid question, but I did not
> find the answer from documentation.
See the FAQ question 7.10 How do file names work in Windows?
> I managed to read my spss .sav file into the R, no
> problem. Next I would like to write this data to a
> file in ascii-format. I tried to use write.table and I
> got no error messages, but no file either. What is the
> right way to make it?
>
> At least write.table("c:\foo\data.dat") does not
> work..
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UKFax: +44 1865 272595
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[R] Simple question about export
Hi,
Sorry about making this stupid question, but I did not
find the answer from documentation.
I managed to read my spss .sav file into the R, no
problem. Next I would like to write this data to a
file in ascii-format. I tried to use write.table and I
got no error messages, but no file either. What is the
right way to make it?
At least write.table("c:\foo\data.dat") does not
work..
Thanks in advance!
Michael
=
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+358 40 849 1140
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