Looking for this kind of data...

Hey all,

So I am looking for a particular kind of data:

What I would like to have, it higher than 3-d data, but where we know before hand the number of clusters that exist.

Through google I have already found a number of data sets that I can download and experiment on, but finding this particular combination has proven to be harder, so I am asking here in case anyone has this type of data.

So basically, any higher than 3-dimensional data, 5, 10, 20, 100-dimensional data, where we know before hand that there are 3, 8, 10, whatever, number of clusters.

Anyone know where I can get my hands on this?

Would really appreciate it, thanks!