memory allocation

Dear sirs,

I'm using the Splancs package to compute standard errors of the estimates of a 
spatio-temporal k function.
When I use as spatial and temporal distances too long vectors (respectively 60 
and 80 entries) for a dataset of 1000 observations, R gives me the message

Error: cannot allocate vector of size 180000 Kb

Reached total allocation of 512 Mb.

I ran the function memory.size() and obtained 392000000 more or less.

Can anyone help me? 

Thanks in advance.

Massimiliano Copetti

Massimiliano Copetti, PhD Student
Institute of Quantitative Methods
L.Bocconi University
Viale Isonzo 25
20135 Milano (Italy)
http://www.unibocconi.it
http://spazioinwind.libero.it/maxcop78