"Spatial Clustering"

Hi All,

This is more of a theoretical question more than anything else
I was wondering if it is possible to use a normal K-NN modeller within rapid miner to cluster data that has latitude longitude associated with it
For example, I have a data set that looks like below where X and Y are latitude and longitude co-ordinates. Where the same ID can have multiple events in multiple locations
Is there a way to make rapid miner see the lat,long information as a  spatial variable. If it looks at it as a regular variable it will give far too much weight to the co-ordinates and a degree of latitude isn't the same as a degree of longitude

    Event 1, Event2, Event 3, Lat Long
ID    0            1          0          X    Y

Thanks very much for you help