I've been using boost::icl for interval searching. So far it's been working great. I am using it for closed interval searches for chemical masses. 

Unfortunately, I've reached a point where I've too much data, I think. The use of sets has started to kill my memory usage. 

I'd like to switch over to Boost::Geometry, but there's precious little about indexing 1D segments (I don't even mind 2D segments). 

Can someone point me in the right direction?

Thanks!

Adam