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Loading .RData from Internet

6 messages · zhiji19, Ivan Calandra, Rainer M Krug +1 more

zhiji19
# 
Dear All,

Can you please suggest me a correct way to load the following R data frame
from the internet and save it to the hard drive?

The following is what I tried:
However, when I used dim() to check the dataset, I got:
[1] 11085  1

The correct dimension should be 5000 and 10.

Many Thanks.
Ivan Calandra
# 
Try with load() instead of read.table()
read.table() is for csv, txt... files.
load() is for R files

Ivan

Le 12/6/2010 09:35, zhiji19 a ?crit :

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      zhiji19
    

    

      
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I tried the load() already. It does not work. The erro is shown as following:

Error in readChar(con, 5L, useBytes = TRUE) : cannot open the connection
In addition: Warning message:
In readChar(con, 5L, useBytes = TRUE) :
  cannot open compressed file
'http://rss.acs.unt.edu/Rdoc/library/twang/data/raceprofiling.RData',
probable reason 'Invalid argument'

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Rainer M Krug
    

    

      
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On 12/06/2010 10:29 AM, zhiji19 wrote:

            

      
      
      
    

        
load() works - I downloaded the data and then used load() - it works.

I don't know if load() accepts an URL as a source, because that gave me
IMMEDIATELY an error.

Cheers,

Rainer

            

      
      
      
    

        
- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation
Biology, UCT), Dipl. Phys. (Germany)

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email:      Rainer at krugs.de

Skype:      RMkrug
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On Mon, Dec 6, 2010 at 8:29 PM, zhiji19 <zhiji19 at gmail.com> wrote:

            

      
      
      
    

        
a<-url("http://rss.acs.unt.edu/Rdoc/library/twang/data/raceprofiling.RData")
load(a)

  
    

      
      
    

  


  


      

    

    

      
      

        


  

        

      Ivan Calandra
    

    

      
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You can create a connection to the URL and load() the connection.
Like this:
con <- 
url('http://rss.acs.unt.edu/Rdoc/library/twang/data/raceprofiling.RData')
load(file=con)
close(con)
str(raceprofiling)

But the easiest way is to save the file and then load it.

Ivan

Le 12/6/2010 10:44, Rainer M Krug a ?crit :