dtw (version 1.4-3)

dtwPlotThreeWay: Plotting of dynamic time warp results: annotated warping function

Description

Plot a DTW results for visual inspection.

Usage

dtwPlotThreeWay(d,xts=NULL,yts=NULL,type.align="p",type.ts="l",
	       margin=4, inner.margin=0.2, title.margin=1.5,
	       xlab="Query index",ylab="Template index",main="Timeseries alignment",
			... )

Arguments

d

an alignment result, object of class dtw

xts

query vector

yts

template vector

xlab

label for the query axis

ylab

label for the template axis

main

main title

type.align

line style for alignment path plot

type.ts

line style for timeseries plot

margin

outer figure margin

inner.margin

inner figure margin

title.margin

space on the top of figure

...

additional arguments, passed to plotting functions

Warning

These functions are incompatible with mechanisms for arranging plots on a device: par(mfrow), layout and split.screen.

concept

Dynamic Time Warp

Details

Display the query and template time series and their alignment, arranged so that alignment can be visually inspected.

Only single-variate time series are supported, and they must be passed to the xts and yts arguments (query and template are not stored in the dtw object).

Examples

## A noisy sine wave as query
## A cosine is for template; sin and cos are offset by 25 samples

idx<-seq(0,6.28,len=100);
query<-sin(idx)+runif(100)/10;
template<-cos(idx)
dtw(query,template,keep=TRUE)->alignment;


## Beware of the template's y axis, may be confusing
## Equivalent to plot(alignment,xts=query,yts=template,type="three");
dtwPlotThreeWay(alignment,xts=query,yts=template);