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Fitting a circle

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  • Januar 8, 2011 um 5:36 pm Uhr #12551
    saeed farahanysaeed farahany
    Mitglied

    Hi.
    I wanted to fitting a circle for my data. I didn’t find any non-linear curve fitting in Flexpro.8 for circle.
    I need to calculate radius of fitted circle.How can I do this?

    Januar 8, 2011 um 5:36 pm Uhr #8214
    saeed farahanysaeed farahany
    Mitglied

    Hi.
    I wanted to fitting a circle for my data. I didn’t find any non-linear curve fitting in Flexpro.8 for circle.
    I need to calculate radius of fitted circle.How can I do this?

    Januar 10, 2011 um 6:24 pm Uhr #8895
    Bernhard KantzBernhard Kantz
    Teilnehmer

    In this case you have to use your own user-defined function in the nonlinear curvefit analysis object.
    The circe function is (x-x0)^2+(y-y0)^2 = R^2
    For the upper half of the circle you could use the following FPScript function:

    
Dim x0 = p[0]
Dim y0 = p[1]
Dim R = p[2]
Sqrt(R^2 - (x-x0)^2) + y0

    support@weisang.com

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