"Tom Colson" <[EMAIL PROTECTED]> writes:
>
> > rm(data1)
> > variog.1.b <- variog(raw.data)
> variog: computing omnidirectional variogram
> Error in vector("double", length) : vector size specified is too large
>
> Turns out I was wrong re: # of rows...it's 304,000
>
>
> Same problem. Version is 2.1.1, hardware is Dual Xeon 3.6 4 GB RAM, XP Pro
> 64 Bit. Can reproduce the problem with 64Bit R 2.1.1 running on Fedora 4,
> same hardware.
>
Variograms involve the differences between all pairs of points which
can become a rather large number of values. 304000*303999/2 in your
case, about 344GB by my reckoning. And the distances between them
makes for a similar quantity.
Now, some algorithms may be smarter than to keep all values in memory,
but you haven't even told us where you got the variog() from. It
doesn't seem to be in the standard packages, although we do have
variogram() and Variogram() in spatial and nlme.
--
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