ptw (1.0-4)

Parametric Time Warping.

Parametric Time Warping aligns patterns, i.e. it aims to put corresponding features at the same locations. The algorithm searches for an optimal polynomial describing the warping. It is possible to align one sample to a reference, several samples to the same reference, or several samples to several references. One can choose between calculating individual warpings, or one global warping for a set of samples and one reference. Two optimization criteria are implemented: RMS (Root Mean Square error) and WCC (Weighted Cross Correlation).

Maintainer: Tom Bloemberg
Author(s): Jan Gerretzen <>, Paul Eilers <>, Hans Wouters, Tom Bloemberg <>, Ron Wehrens <> and The R Development Core Team

License: GPL (>= 2)

Uses: Does not use any package
Reverse depends: ChemometricsWithR, RGCxGC, RpeakChrom
Reverse suggests: ChemometricsWithR, spant

Released almost 8 years ago.