[R] Creating a map .

[Alaios]

Hello.
I would try to explain what I would like to implement so to suggest me what to 
try out.

I would like to create an area of X*X  km that would be used to "Simulate" an 
area map (eg. city's area, suburban area). 

-X would be a parameter so I do not want it to be fixed
-In this map I would like to place users (people), thus I do not know in advance 
if in one place there would be one,two, or more users..
-I would also like to not have fixed resolution in my map and specify it as a 
parameter during run-time. In my X*X area I would like sometimes to have 
resolution of 1Km and others resolution of 10 meters. As resolution increases (1 
km->100m->10m) less users would be found in the same "place".
-In every "place" I would like to specify some parameters (eg. number of users, 
characteristics of users, energy consumption per user). I do not know in advance 
how much data I would need per user. Ofc 10 parameters per place might be ok but 
a not fixed approach is better.

My first thoughts were to use an array and actually define an array of X*X 
dimension where X is defined at run time as parameter. The problem with this 
approach is that I do not have variable resolution in this area as I have the 
constant number of X*X places only. Also one more problem is that the cels of 
the array (where cell is used to simulate "place") can not be used to story many 
parameters but only a single numerical value).

What do you suggest me to try looking at and what made up your decision?

I would like to thank everyone that reached to this point reading all my big 
text.

Best Regards
Alex.