[R] function to export data

[Paul Hiemstra]

Hi Daniel,

You did not make clear why you want to export the data. If you want to 
export data to another program the usual way to export data to a text 
file is through the use of write.table(). Something along the lines of:

summary(cars) # cars is a standard R dataset
write.table(summary(cars), file = "dataexp.txt")
?write.table

If you want to store R data to read it back into R again I would 
recommend the save() option in combination with the load option. Example:

x = summary(cars)
save(x, file = "dataexp.rda") # The extension of the file is not really 
important

# Load a new R session
load("dataexp.rda") # This makes the object "x" available in the new session

cheers,

Paul

Daniel Pires wrote:
>  
>
> Hi,
>
>  
>
> I’m trying to built a simple  function that allows me to export
> automatically some results to a text file. I’ve tried the two following
> approaches but none worked. 
>
>  
>
>   
>> exportdata<-function(x) {
>>     
>
> + dataexp<-summary(x)
>
> +  export(dataexp,type="ascii",file="dataexp.txt")
>
> +  }
>
>   
>> exportdata(glm.poisson0)
>>     
>
> Error in eval(expr, envir, enclos) : object "dataexp" not found
>
>  
>
>  
>
>  
>
> exportdata2<-function(x) {
>
> sink("exportdata2.txt") 
>
> summary(x)  
>
> sink() 
>
> }
>
>  
>
>   
>> exportdata2(glm.poisson0) # the file is created but with no data in it.
>>     
>
>  
>
>  
>
> Can anyone give me some hints on what I’m missing here? I would be very
> grateful for that.
>
>  
>
> Thanks.
>
>  
>
>  
>
> Daniel Pires
>
>  
>
>  
>
> Daniel Pires
>
> Faculdade de Ciências da Universidade de Lisboa
>
> Dep. Biologia Animal
>
> Ed. C2, piso 2
>
> Campo Grande 1749-016 Lisboa
>
> Portugal
>
>  <http://ffishgul.fc.ul.pt/> http://ffishgul.fc.ul.pt/
>
>  
>
>
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>
>   
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-- 
Drs. Paul Hiemstra
Department of Physical Geography
Faculty of Geosciences
University of Utrecht
Heidelberglaan 2
P.O. Box 80.115
3508 TC Utrecht
Phone: 	+31302535773
Fax:	+31302531145
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