dtwalign

library0.1.1pypypi✓ verified 85d ago

Comprehensive Dynamic Time Warping (DTW) package for Python. Supports partial matching and various constraint options (e.g., Sakoe-Chiba band, Itakura parallelogram). Current version 0.1.1 is a basic release; development appears infrequent.

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pip install dtwalign

github ↗homepage ↗

INSTALL

IMPORT

SIG · DTWALIGN

dtwalign

analyticspythonv0.1.1

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

dtw

✓ from dtwalign import dtw

✗ import dtwalign

Most common mistake: importing the package itself, not the function

dtw_from_distance_matrix

✓ from dtwalign import dtw_from_distance_matrix

Simple alignment of two sequences and print distance and warping path.

import numpy as np from dtwalign import dtw x = np.array([1, 2, 3, 4, 5]) y = np.array([2, 3, 4, 5, 6]) res = dtw(x, y) print(res.distance) print(res.path)

Debug

Known issues

gotchaThe dtw function expects 1D arrays by default; passing multi-dimensional may raise ValueError.

fix

Flatten arrays before passing: x.ravel(), y.ravel().

affects: all

breakingVersion 0.1.1 does not support Python 2; requires Python >=3.6.

fix

Use Python 3.6+.

affects: >=0.1.1

deprecatedThe 'step_pattern' parameter is not yet implemented; using it will raise NotImplementedError.

fix

Do not pass step_pattern; only default symmetric2 is available.

affects: <=0.1.1

Errors

Common errors & fixes

ValueError: cannot convert float NaN to integer

NaN values in input sequences.

fix

Remove or impute NaN values before calling dtw.

AttributeError: 'NoneType' object has no attribute 'distance'

Calling dtw with incompatible array shapes (e.g., 2D with 1D).

fix

Ensure both inputs are 1D arrays or use ravel().

Upgrade

Version history

0.1.1latest on PyPI · released Dec 30, 2022

Audit

Dependencies

numpyrequiredcore array operations

scipyrequireddistance matrix computation

Agent activity

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Resources

githubhttps://github.com/statefb/dtwalign ↗

homepagehttps://github.com/statefb/dtwalign ↗