Variable Penalty Dynamic Time Warping Variable Penalty Dynamic Time Warping for aligning GC-MS chromatograms to a master signal and more. With the appropriate penalty this method performs good alignment without altering the shape of peaks in GC-MS data. Software David Clifford <David.Clifford@csiro.au> David Clifford, Glenn Stone GPL-2 2012-04-22 application/tgz http://CRAN.R-project.org/package=VPdtw