Hello,
On Oct 29, 2013, at 10:16 PM, Prof Brian Ripley <rip...@stats.ox.ac.uk> wrote:
> On 29/10/2013 20:42, Rui Barradas wrote:
>> Hello,
>>
>> You can use the argument to write.csv or write.table append = TRUE to
>> write the matrix in chunks. Something like the following.
>
> That was going to be my suggestion. But the reason long vectors have not been
> implemented is that is rather implausible to be useful. A text file with
> the values of such a numeric matrix is likely to be 100GB. What are you going
> to do with such a file? For transfer to another program I would seriously
> consider a binary format (e.g. use writeBin), as it is the conversion to and
> from text that is time consuming.
I need to submit it to a cluster analysis (k-means). From an independent source
I have been advised to use means algorithm written in C which is very fast and
efficient. It asks for a txt file as an input.
I tried few options in R, where I am more comfortable, but solution never came,
even after too many hours.
Thanks!
Best,
PM
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