princurve-package {princurve} | R Documentation |
Fits a Principal Curve in Arbitrary Dimension
Hastie, T. and Stuetzle, W., Principal Curves, JASA, Vol. 84, No. 406 (Jun., 1989), pp. 502-516, DOI: 10.2307/2289936 (PDF).
See also Banfield and Raftery (JASA, 1992).
principal_curve
, project_to_curve