[R] Can R handle large dataset?

2008-05-14 Thread Mingjun Huang
Hello,

   I am new to R, can anyone give me an idea of how R handle a large dataset
   (e.g. couple of Gbytes)? Thanks a lot!


   Best,
   Mingjun

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Re: [R] Can R handle large dataset?

2008-05-14 Thread Abhijit Dasgupta
I believe this is determined by how much memory your computer has, not 
particularly by R itself.


Mingjun Huang wrote:

Hello,

   I am new to R, can anyone give me an idea of how R handle a large dataset
   (e.g. couple of Gbytes)? Thanks a lot!


   Best,
   Mingjun

__
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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.



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Re: [R] Can R handle large dataset?

2008-05-14 Thread Julian Burgos
Depends on the RAM in your machine.  And in your definition of 'handle'. 
 You may be able to load a very large dataset into R, but won't be able 
to use some functions that require additional memory.


A vague answer to a vague question... :)

Julian


Mingjun Huang wrote:

Hello,

   I am new to R, can anyone give me an idea of how R handle a large dataset
   (e.g. couple of Gbytes)? Thanks a lot!


   Best,
   Mingjun

__
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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.


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Re: [R] Can R handle large dataset?

2008-05-14 Thread Richard Rowe

Mingjun Huang wrote:

Hello,

   I am new to R, can anyone give me an idea of how R handle a large dataset
   (e.g. couple of Gbytes)? Thanks a lot!

  
In answer to your subject line: yes, not gigantic (multi-terrabyte), but 
large is likely to be OK.


How depends on what you are trying to do.  If you are running a 64 bit 
OS with a terrabyte or more of RAM you shouldn't notice unless you are 
doing something messy (all bets are off if you are attempting to list 
all permutations of the data!); if you are running 32bit with a max size 
set by the OS of 2Gb then the answer is with much care and considerable 
cunning and possibly modification of your intermediate goals.
Q1 is always - why are you dealing with such a big dataset? Is all the 
data equally informative?  Because you can collect data doesn't mean you 
have to, or if you do insist on collecting it (presumably 
automatically), that it will be useful.


--
Dr Richard Rowe
Zoology  Tropical Ecology
School of Marine  Tropical Biology
James Cook University
Townsville 4811
AUSTRALIA

ph +61 7 47 81 4851
fax +61 7 47 25 1570
JCU has CRICOS Provider Code 00117J

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