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Plot DTW alignment

Source: R/ops-dtw.R
plotDTW.Rd

Visualizes the DTW alignment between two waveforms.

Usage

plotDTW(
  dtw_result,
  x = NULL,
  y = NULL,
  type = c("alignment", "cost", "waveforms", "all")
)

Arguments

dtw_result

A dtw_result object from dtwDistance().

x

First waveform (optional, for overlay).

y

Second waveform (optional, for overlay).

type

Plot type: "alignment", "cost", "waveforms", or "all".

Value

A ggplot object or list of plots.

References

Sakoe H, Chiba S (1978). "Dynamic programming algorithm optimization for spoken word recognition." IEEE Transactions on Acoustics, Speech, and Signal Processing, 26(1), 43-49.

See also

dtwDistance(), dtwWarp(), dtwClustering()

Examples

x <- sin(seq(0, pi, length.out = 100)) * 30
y <- sin(seq(0, pi, length.out = 100) + 0.3) * 30
dr <- dtwDistance(x, y)
plotDTW(dr)