On Mon, 31 Oct 2011, Stefano Conti wrote:
> Dear R users,
>
> When dumping an R matrix object into a file -- typically via the
> 'write.table' function -- the 'eol' option can be used to
specify
> the end-of-line character(s) which should appear at the end of each
> row.
>
> However the argument to 'eol' seems to be restricted to have length
> 1, whereas ideally I would like different rows to be written to file
> each with its own end character string. For instance:
That's not what 'eol' means. It is the indicator of the end of
line,
so of course it is the same for every line.
>> test <- matrix(1:12, nrow=4); test
> [,1] [,2] [,3]
> [1,] 1 5 9
> [2,] 2 6 10
> [3,] 3 7 11
> [4,] 4 8 12
>
>> write.table(test, file="test.txt", sep=" ",
eol=paste(" test", 1:4, "\n", sep=""))
>
>> read.table(file="test.txt", sep=" ")
> V1 V2 V3 test1
> 1 1 5 9 test1
> 2 2 6 10 test1
> 3 3 7 11 test1
> 4 4 8 12 test1
>
> whereas I would like the last column of the dump file to be
"test1",
> "test2", "test3", "test4". Is there a way
this could be achieved?
Hmn, you said it: 'the last column'.
Create what you want as the last column of your data frame: it wil
then be written to the file as the last column.
The author of write.table.
> With many thanks in advance for your help, kind regards,
>
>
> --
> Dr Stefano Conti
> Statistics Unit (room #2A19)
> Health Protection Services
> HPA Colindale
> 61 Colindale Avenue
> London NW9 5EQ, UK
> tel: +44 (0)208-3277825
> fax: +44 (0)208-2007868
>
> -----------------------------------------
> **************************************************************************
> The information contained in the EMail and any attachments is
> confidential and intended solely and for the attention and use of
> the named addressee(s). It may not be disclosed to any other person
> without the express authority of the HPA, or the intended
> recipient, or both. If you are not the intended recipient, you must
> not disclose, copy, distribute or retain this message or any part
> of it. This footnote also confirms that this EMail has been swept
> for computer viruses, but please re-sweep any attachments before
> opening or saving. HTTP://www.HPA.org.uk
> ************
> ______________________________________________
> R-help at 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.
>
--
Brian D. Ripley, ripley at stats.ox.ac.uk
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, UK Fax: +44 1865 272595