[R] a quick Q about memory limit in R

[Yan Yu]

Hello, there,
   I got this error when i tried to run " data.kr <- surf.gls(2, expcov,
data, d=0.7);"

"Error: cannot allocate vector of size 382890 Kb
Execution halted"

My data is 100x100 grid.

the following is the summary of "data":
> summary(data);
       x                y                z
 Min.   :  1.00   Min.   :  1.00   Min.   :-1.0172
 1st Qu.: 26.00   1st Qu.: 25.75   1st Qu.: 0.6550
 Median : 51.00   Median : 50.50   Median : 0.9657
 Mean   : 50.99   Mean   : 50.50   Mean   : 1.0000
 3rd Qu.: 76.00   3rd Qu.: 75.25   3rd Qu.: 1.2817
 Max.   :100.00   Max.   :100.00   Max.   : 2.6501

I have 2 Qs:
(1). for a 100x100 grid, why R tried to allocate such a HUGE vector,
382890 Kb??

(2) what decides the memory limit in R, How can increase that?

Many thanks,
yan