Circle Fit (Pratt method)

Version 1.0.0.0 (2.18 KB) by Nikolai Chernov
Fits a circle to a set of data points on a plane; returns the circle center (a,b) and radius R.
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12.9K Downloads
Updated 10 Jan 2009

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Editor's Note: This file was selected as MATLAB Central Pick of the Week

This is a robust and accurate circle fit. It works well even if data
points are observed only within a small arc. This circle fit was proposed by V. Pratt in article "Direct least-squares fitting of algebraic surfaces", Computer Graphics, Vol. 21, pages 145-152 (1987). It is more stable than the simple Circle Fit by Kasa (file #5557).

Cite As

Nikolai Chernov (2024). Circle Fit (Pratt method) (https://www.mathworks.com/matlabcentral/fileexchange/22643-circle-fit-pratt-method), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R12
Compatible with any release
Platform Compatibility
Windows macOS Linux
Acknowledgements

Inspired by: Circle fit

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Version Published Release Notes
1.0.0.0