[R] question on write.table

[Prof Brian Ripley]

Note that write.table is very much faster in current versions of R.
So you could save the object, read it into 2.2.1 (beta) and write it out 
there.

On Thu, 15 Dec 2005, Weiwei Shi wrote:

> Hi,
> I have a question on write.table:
> I have a data.frame called t7 as below:
>
>> dim(t7)
> [1] 14015184        6
>> t7[1:5,]
>  uci uce par line graphical.forms  stems
> 1   0   0   0    0          active  activ
> 2   0   0   0    0          policy polici
> 3   0   0   0    0              wc     PC
> 4   0   0   0    0             eff    elf
> 5   0   0   0    0             icn    ICC
>
> I want to write the contents of t7 into a file, which can be read
> later by a python program. So I used:
> write.table(t7,file="map")
>
> , which of course takes forever.
>
> Is there another way to make it finish in a standable time?
>
> I have to use old R version since I need to use ttda package.
>> version
>         _
> platform x86_64-unknown-linux-gnu
> arch     x86_64
> os       linux-gnu
> system   x86_64, linux-gnu
> status
> major    2
> minor    0.1
> year     2004
> month    11
> day      15
> language R
>
> My linux box has 8 G memory.
>
> Thank you for your help!
>
> Weiwei
> --
> Weiwei Shi, Ph.D
>
> "Did you always know?"
> "No, I did not. But I believed..."
> ---Matrix III
>
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-- 
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)
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