Skip to main content

Pure Python implementation of the Ramer-Douglas-Peucker algorithm

Project description Documentation Status

Python/NumPy implementation of the Ramer-Douglas-Peucker algorithm (Ramer 1972; Douglas and Peucker 1973) for 2D and 3D data.

The Ramer-Douglas-Peucker algorithm is an algorithm for reducing the number of points in a curve that is approximated by a series of points.


pip install rdp


Simple pythonic interface:

from rdp import rdp

rdp([[1, 1], [2, 2], [3, 3], [4, 4]])
[[1, 1], [4, 4]]

With epsilon=0.5:

rdp([[1, 1], [1, 1.1], [2, 2]], epsilon=0.5)
[[1.0, 1.0], [2.0, 2.0]]

Numpy interface:

import numpy as np
from rdp import rdp

rdp(np.array([1, 1, 2, 2, 3, 3, 4, 4]).reshape(4, 2))
array([[1, 1],
       [4, 4]])


Douglas, David H, and Thomas K Peucker. 1973. “Algorithms for the Reduction of the Number of Points Required to Represent a Digitized Line or Its Caricature.” Cartographica: The International Journal for Geographic Information and Geovisualization 10 (2): 112–122.

Ramer, Urs. 1972. “An Iterative Procedure for the Polygonal Approximation of Plane Curves.” Computer Graphics and Image Processing 1 (3): 244–256.

Project details

Download files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

Filename, size & hash SHA256 hash help File type Python version Upload date
rdp-0.8.tar.gz (4.4 kB) Copy SHA256 hash SHA256 Source None Dec 19, 2016

Supported by

Elastic Elastic Search Pingdom Pingdom Monitoring Google Google BigQuery Sentry Sentry Error logging AWS AWS Cloud computing DataDog DataDog Monitoring Fastly Fastly CDN SignalFx SignalFx Supporter DigiCert DigiCert EV certificate StatusPage StatusPage Status page