ptw (1.9-15)

0 users

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). Both warping of peak profiles and of peak lists are supported. A vignette for the latter is contained in the inst/doc directory of the source package - the vignette source can be found on the package github site.

Maintainer: Ron Wehrens
Author(s): Jan Gerretzen [ctb], Paul Eilers [aut], Hans Wouters [ctb], Tom Bloemberg [aut], Ron Wehrens [aut, cre]

License: GPL (>= 2)

Uses: nloptr
Reverse depends: ChemometricsWithR, RGCxGC, RpeakChrom
Reverse suggests: ChemometricsWithR, spant

Released 6 months ago.

12 previous versions



  (0 votes)


  (0 votes)

Log in to vote.


No one has written a review of ptw yet. Want to be the first? Write one now.

Related packages: ArDec, Ecdat, TSdbi, boot, brainwaver, chron, depmix, dlm, dse, dyn, dynlm, ensembleBMA, fGarch, fNonlinear, fame, fracdiff, fractal, kza, mAr, mFilter(20 best matches, based on common tags.)

Search for ptw on google, google scholar, r-help, r-devel.

Visit ptw on R Graphical Manual.