[R] Questions about spatial data

[Ronaldo Reis Jr.]

Hi,

I have two questions about spatial data.

1) I have this grid

x <- rep(c(1:8),c(rep(6,8)))
y <- rep(c(1:6),8)

I need to make some others grids with same length and different numbers of 
points whit a random spatial pattern.

How is the best method to make this in R.

2) I need to produce some grids with the same numbers of points in different 
degrees of aggregation, the level of aggregation for all grids must be 
statistically different.

How to do these grids in R and how to test the significance between these 
grids?

Thanks for all
Ronaldo
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