This R package implements the appraoch to compute principal curves and
manifolds as described in:

Samuel Gerber, Tolga Tasdizen, Ross Whitaker,
Dimensionality Reduction and Principal Surfaces via Kernel Map Manifolds, 
In Proceedings of the 2009 International Conference on Computer Vison (ICCV 2009).

Samuel Gerber and Ross Whitaker,
Conditional Expectation Curves, 
Submitted 2011.

The code uses the ANN library by David Mount and Sunil Arya distributed
under the LGPL license.  For detailed information on ANN see
http://www.cs.umd.edu/~mount/ANN.





