Looking for large multidimensional datasets

Question

Where can I find large sample files with multidimensional data?

I'm interesting in both categorical and mostly quantitative data.

Anything from spatio-temporal weather simulations to health studies or preferably anything with 20 variables.

I want to try different visualization tools and I need data to test them.

Answer 1

You can search through the UCI Machine Learning Repository by the # of Attributes.

For example, the Arrhythmia dataset has 279 attributes.