See ?sparseMatrix from package Matrix.

Eloi

On 12-05-07 02:23 PM, Lucas wrote:
> Dear R people.
> I´m facing a big problem.
> I need to create a matrix with 10.000 columns and 750.000 rows.
> matrix<- as.data.frame(matrix(data=0L, nrow=750000, ncol=10000)
> as you can see, the data frame has huge dimesions. I was able to find out
> about thr "L" in data, this way I´m telling that my data is "integer"
> class. By doing this
> object.size(matrix) tells me that this is half of the matrix when I don´t
> define as integer (L)
> The data that I´ll be filling with my matrix will be 0 and 1, nothing else,
> so I could use less bytes.
> so, my cuestion is, How can I create the same matrix but using even less
> bytes?
>
> I´ll appreciate if you can help me.
>
> Thank you.
> Lucas
>
> 	[[alternative HTML version deleted]]
>
>
>
> ______________________________________________
> R-help@r-project.org mailing list
> 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.


-- 
Eloi Mercier
Bioinformatics PhD Student, UBC
Paul Pavlidis Lab
2185 East Mall
University of British Columbia
Vancouver BC V6T1Z4


	[[alternative HTML version deleted]]

