[R] Using very large matrix

[Philipp Pagel]

> I have to use a very large matrix. Something of the sort of 
> matrix(80000,80000,n) .... where n is something numeric of the sort 0.xxxxxx
> 
> I have not found a way of doing it. I keep getting the error
> 
> Error in matrix(nrow = 80000, ncol = 80000, 0.2) : too many elements specified
> 
> Any suggestions? I have searched the mailing list, but to no avail. 

A 80000x80000 matrix has 6.4 billion cells. If you assume 4 byte
(32bit) for a double precision floating point number that's an
impressive 25.6 Gb. Certainly does not fit into RAM on my machine.

cu
	Philipp

-- 
Dr. Philipp Pagel
Lehrstuhl für Genomorientierte Bioinformatik
Technische Universität München
Wissenschaftszentrum Weihenstephan
85350 Freising, Germany
http://mips.gsf.de/staff/pagel