This implements a simple R-tree library according to Guttman's original paper. Currently node splitting is done through the quadratic algorithm in that paper.
The interface (and implementation) is purely functional.
A functor interface is also provided for providing implicit bounds for values.
The standard interface is:
type 'a t
val empty : 'a t
val insert : 'a t -> 'a -> Envelope.t -> 'a t
val find : 'a t -> Envelope.t -> 'a list
val size : 'a t -> int
and Envelope.t is simply float * float * float * float
To compile, run tests & install, simply:
$ make
$ make install
The only external depency is oUnit for running unit tests.
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