Following recent discussions on this list about how to work with  
multiarrays (n-dimensional arrays, data cubes) in Clojure, I have  
started a project on Google Code that is at the moment more of a  
design study than an implementation meant for use. It contains

- a protocol definition for multiarray functions
- a Clojure implementation (using the new deftype feature) of  
multiarrays and the protocol
- protocol implementations for
   - a representation based on nested Clojure vectors
   - the Java multiarray class from the Unidata libraries (netCDF etc.)
   - the Java multiarray class from CERN's Colt library

Note that the current state is very incomplete. Comments and  
contributions of all kinds are welcome. My goal is to get this right  
rathen then to get out a working library quickly, so take your time...

The code is at:

        http://code.google.com/p/clj-multiarray/

Konrad.

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