Re: [R] maximum matrix size if it runs with 64-bit R

On Oct 6, 2010, at 6:08 PM, Carrie Li wrote: Thanks a lot!! Any integer is single element, Not the way I would have expressed it. An integer is a 4 byte number (range 2^31 + sign) and a double has a 8 byte floating point representation (probably specified by some IEEE designation that I

Re: [R] maximum matrix size if it runs with 64-bit R

Thanks a lot!! Any integer is single element, whereas any number with decimal point is double element ? Is that right ? below is what I tried so, basically, simply force it to be integer would save some space ? P=1 a=rnorm(P*P)*1000 a=as.integer(a) D1=matrix(a, nrow=P) object.size(D1) >4000

Re: [R] maximum matrix size if it runs with 64-bit R

On Oct 5, 2010, at 11:17 PM, Carrie Li wrote: Thank you, Henrik! That makes more sense now. You mentioned that every double value needs 8 bytes. So, in R, how many decimal point, or any number smaller than, say 10^4 are considered as double value ? (Sorry I don't have any C or Java language

Re: [R] maximum matrix size if it runs with 64-bit R

Thank you, Henrik! That makes more sense now. You mentioned that every double value needs 8 bytes. So, in R, how many decimal point, or any number smaller than, say 10^4 are considered as double value ? (Sorry I don't have any C or Java language background, and couldn't find it for R. ) I apprecia

Re: [R] maximum matrix size if it runs with 64-bit R

On Tue, Oct 5, 2010 at 5:21 PM, Carrie Li wrote: > I am sorry that it has been couple days. > I've read the website you provided below, but still don't quite know if this > is doable. > The maximum vector length is 2^31-1, so here is what I tired, and it > returned errors as below. > > > P=2 >

Re: [R] maximum matrix size if it runs with 64-bit R

I am sorry that it has been couple days. I've read the website you provided below, but still don't quite know if this is doable. The maximum vector length is 2^31-1, so here is what I tired, and it returned errors as below. P=2 D=matrix(rep(0, P*P), nrow=P) Error: cannot allocate vector of s

Re: [R] maximum matrix size if it runs with 64-bit R

On Oct 2, 2010, at 11:14 AM, Carrie Li wrote: > Hi everyone, > > If I run on a 64-bit R, what is the maximum matrix size that it can handle ? > Is a matrix 20,000 x 20,000 possible on 32 bit ? > Thanks for answering! A matrix is a vector with 'dim' attributes. The maximum vector length is 2^31

[R] maximum matrix size if it runs with 64-bit R

Hi everyone, If I run on a 64-bit R, what is the maximum matrix size that it can handle ? Is a matrix 20,000 x 20,000 possible on 32 bit ? Thanks for answering! Carrie-- [[alternative HTML version deleted]] __ R-help@r-project.org mailing lis