Re: [R] writing matrices (no subject)

From: David Ruau <David.Ruau_at_rwth-aachen.de>
Date: Wed 20 Jul 2005 - 23:37:38 EST

Thanks for your answers,
I need to print this data frame into a .csv file to import it in WEKA. Do you have better solution?
I quite a new user of WEKA I don't know if you can give it a binary file. I think you can but it will be complicated...

David

On Jul 20, 2005, at 15:07, jim holtman wrote:

> You might have better luck if you have a loop that is processing one
> row at a time. That means you will have to determine what the
> formatting should be. With write.table it is trying to process the
> entire array at once to determine the best formatting and it taking a
> lot of memory (my guess at least 500MB).
>
> What are you going to do with a text file that large? Can you write
> it out in binary if you are reading it in with another program? If
> you are going to reread it with R, then 'save' would be a better
> choice.
>
> On 7/20/05, David Ruau <David.Ruau@rwth-aachen.de> wrote:
>> Hi All,
>>
>> I want to print a square matrix of 7000 x 7000 into a text file. But I
>> got a error after few hours of computation...
>> --------
>>> write.table(MyDistMxDF, file = "temp.csv", sep=",", quote=F)
>> *** malloc: vm_allocate(size=8421376) failed (error code=3)
>> *** malloc[2889]: error: Can't allocate region
>> Error: vector memory exhausted (limit reached?)
>> *** malloc: vm_allocate(size=8421376) failed (error code=3)
>> *** malloc[2889]: error: Can't allocate region
>>> q()
>> *** malloc: vm_allocate(size=8421376) failed (error code=3)
>> *** malloc[2889]: error: Can't allocate region
>> *** malloc: vm_allocate(size=8421376) failed (error code=3)
>> *** malloc[2889]: error: Can't allocate region
>> Error in lazyLoadDBfetch(key, datafile, compressed, envhook) :
>> internal error in decompress1
>>>
>> ------
>> I am running R 2.0.1 on MacOS X 10.3 with 1Gb ram.
>> How could I write such a matrix to a text file.
>>
>> David
>>
>> ______________________________________________
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>>
>
>
> --
> Jim Holtman
>
> What the problem you are trying to solve?
>
>



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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 Received on Wed Jul 20 23:49:05 2005

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