How to create a high-dimensional matrix
On Tue, Oct 16, 2012 at 8:46 PM, lrl <liurl1221 at gmail.com> wrote:
Hi, everyone
I need to create a 429497 x 429497 matrix.
When I use
*matrix(0,429497,429497)*
I got the error information : Error in matrix(0, 429497, 429497) : too many
elements specified
Then I use "ff" package, try to store this matrix on disk
* x<-ff(0,dim=c(429497,429497)*
And I got the error information :
Error in if (length < 0 || length > .Machine$integer.max) stop("length must
be between 1 and .Machine$integer.max") :
missing value where TRUE/FALSE needed
In addition: Warning message:
In ff(0, dim = c(429497, 429497)) : NAs introduced by coercion
I am using Unix. The free memory is about 33G
.Machine$integer.max
[1] 2147483647 What can I do the create such a high dimension matrix?
You'll note that 429497 ^2 - .Machine$integer.max is still a very large positive number. Is your matrix perhaps sparse and you don't actually have to store quite so many values? Michael
Many thanks! Ruiling Liu -- View this message in context: http://r.789695.n4.nabble.com/How-to-create-a-high-dimensional-matrix-tp4646396.html Sent from the R help mailing list archive at Nabble.com.
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