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Tools for identifying and analysing knots, in space-curves or standard topological representations

Project description

Python (and optional Cython) modules for detecting and measuring knotting and linking. pyknotid can analyse space-curves, i.e. sets of points in three-dimensions, or can parse standard topological representations of knot diagrams.

A graphical interface to some of these tools is available online at Knot ID.

pyknotid was developed as part of the Leverhulme Trust Research Programme Grant RP2013-K-009: Scientific Properties of Complex Knots (SPOCK), a collaboration between the University of Bristol and Durham University in the UK. For more information, see the SPOCK homepage.

If you use pyknotid in your research, please cite us.

Questions or comments are welcome, please email


pyknotid is documented online at readthedocs.

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