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question on write.table

3 messages · Weiwei Shi, Peter Dalgaard, Brian Ripley

Weiwei Shi
# 
Hi,
I have a question on write.table:
I have a data.frame called t7 as below:
[1] 14015184        6
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.
_
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
Peter Dalgaard
# 
Weiwei Shi <helprhelp at gmail.com> writes:
If the only purpose is to write something that python can read, might
it not be more expedient to teach python some other data format that R
can generate easily? E.g. dump() or save(..., ascii=TRUE) ?

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Brian Ripley
    

    

      
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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: