Circle Fit Example

[niNickC]

Has anyone seen any good examples of fitting to a circle?

To make things clear:

Given a set of x,y points, return the centre and radius of a circle which best fits the data.

Many Thanks

[James.M · Accepted solution]

There's a VI called "Fitting on a Sphere VI" that can do what you want. You just need to use a value of zero for Z data points.

[Bob_Schor]

Did you do a Web search?  A number of algorithms are out there -- pick one that seems appropriate for your data set.

Bob Schor

[niNickC]

Yea I did spot this and tried exactly what you said with no success. Then I looked again and realised I messed up. (Forgot about the displayed precision!)

.. yeah ...

Thanks though!

[niNickC]

http://lmgtfy.com/?q=circle+fit+algorithms

Yea just trying to save some dev time!

[altenbach]

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@niNickC wrote:

http://lmgtfy.com/?q=circle+fit+algorithms

Yea just trying to save some dev time!

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Since you are interested in a LabVIEW solution, a forum search here would have immediately found many example of James's suggestion above.

For example look here