Re: [R] write output in a custom format

From: jim holtman <jholtman_at_gmail.com>
Date: Thu, 14 Feb 2008 11:49:09 -0500

Here is a start. You basically have to interate through your data and use 'cat' to write it out:

particle <- list(dose=c(1,100.0,0),pos=data.frame(x=c(0,1,0,1),y=c(0,1,0,1))) output <- file("/tempxx.txt", "w")
cat(particle$dose, "\n", file=output, sep=" ") for (i in 1:nrow(particle$pos)){

    cat(particle$pos$x[i], particle$pos$y[i], "\n", file=output, sep=" ") }
cat("#\n", file=output, sep=" ")
close(output)

Here is what the file looks like:

1 100 0
0 0
1 1
0 0
1 1
#

On 2/14/08, baptiste Auguié <ba208_at_exeter.ac.uk> wrote:
> Hi,
>
>
> I need to create a text file in the following format,
>
> > 1 100.0 0
> > 0 0
> > 1 1
> > 0 0
> > 1 1
> > #
> > 1 100.0 0
> > 0 0
> > 0 1
> > 1 0
> > 1 1
> ...
>
> where # is part of the format and not a R comment.
>
> Each block (delimited by #) consists of a first line with three
> values, call it dose, and a list of (x,y) coordinates which are a
> matrix or data.frame,
>
>
> > particle <- list(dose=c(1,100.0,0),pos=data.frame(x=c(0,1,0,1),y=c
> > (0,1,0,1)))
> >
> > print(particle)
>
>
>
> I'd like to establish a connection to a file and append to it a
> "particle" block in the format above, or even write the whole file at
> once.
>
> Because different lines have a different number of elements, I
> couldn't get write.table to work in this case, and my attempts at sink
> (), dump(), writeLines(), writeChar() all turn into really dirty
> solutions. I have this feeling I'm overlooking a simple solution.
>
> Any help welcome,
>
>
> baptiste
>
> _____________________________
>
> Baptiste Auguié
>
> Physics Department
> University of Exeter
> Stocker Road,
> Exeter, Devon,
> EX4 4QL, UK
>
> Phone: +44 1392 264187
>
> http://newton.ex.ac.uk/research/emag
> http://projects.ex.ac.uk/atto
>
> ______________________________________________
> 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.
>

-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem you are trying to solve?

______________________________________________
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.
Received on Thu 14 Feb 2008 - 16:58:06 GMT

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 14 Feb 2008 - 21:30:15 GMT.

Mailing list information is available at https://stat.ethz.ch/mailman/listinfo/r-help. Please read the posting guide before posting to the list.

list of date sections of archive