Thanks for the clarification, Marc. Also, I should correct my error below. I wrote excel's limit is 16^2. But, it is 2^16 -1
-----Original Message----- From: Marc Schwartz [mailto:[EMAIL PROTECTED] Sent: Fri 6/1/2007 6:23 PM To: Doran, Harold Cc: Guanrao Chen; r-help@stat.math.ethz.ch Subject: Re: [R] What is the maximum size of a matrix? Harold, Actually there is a maximum size, even if one had sufficient memory. Since a matrix is a vector with a dim attribute, and these objects are indexed using integers, the maximum sized vector one 'could' create is: > .Machine$integer.max [1] 2147483647 which is: > 2^31 - 1 [1] 2147483647 and that does not differ on 64 bit systems. HTH, Marc Schwartz On Fri, 2007-06-01 at 17:36 -0400, Doran, Harold wrote: > There is no maximum size. This will be driven by (at least) two issues. > First, how much memory you have on your own computer and second what > data you have in each cell. For instance, an integer takes less memory > than a floating point. > > Other spreadsheet programs like excel limit the number of rows to 16^2 > irrespective of memory, but that is not true here. > > Harold > > > > -----Original Message----- > > From: [EMAIL PROTECTED] > > [mailto:[EMAIL PROTECTED] On Behalf Of Guanrao Chen > > Sent: Friday, June 01, 2007 5:06 PM > > To: r-help@stat.math.ethz.ch > > Subject: [R] What is the maximum size of a matrix? > > > > hi, Rers > > > > I tried to find out the max size (# of rows, # of > > columns) of a matrix that is allowed by R but failed. > > > > Can anybody let me know? > > > > Thanks! > > Guanrao > > [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch 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.
