polarFit(a)

Determines the unique circle defined by given three points.

Syntax

o_polarFit(a)

a: array 1D coord - arbitrary three points in cartesian coords

return: scalar record - center and radius of circle

Usage

Given three points it is possible to define a unique circle. This function finds that circle and returns center and radius.

Location

menu: veeos ==> Data ==> Circles ==> polarFit

library: dataLib

Example

see veeos examples inside of VEE

Notes

Since 3 points on a plane uniquely define a circle (unless they are colinear of course), this function can operate with a closed-form expression and hence no loops. It is fast and precise normally, but if the points are nearly colinear then the result can be noisy.

Reference

Dependencies

Supported On

VEE 7.0+, all platforms

See Also

polarRegress