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| Fitting to Conic Sections |
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Lots of codes exist for fitting a set a data to a straight line. How about fits to the other conic sections? The program fit_conic.f does a least squares fit to the general conic equation. The conic sections (circles, ellipses, parabolas, or hyperbolas) may be arbitrarily translated or rotated.
The program will generate noisy (x,y) data for any of the conic sections (interesting problem in its own right), fit the data to the general second order conic equation, and report back the best fitting conic section. Key attributes such as the center and foci coordinates, lengths of the semi-major and semi-minor axes, rotatation of the conic, and other goodies are reported.
Sometimes its more appropriate to fit data to a given conic section rather than a general conic. If you want to fit data to only circles try public_fit_circle.f . or public_fit_ellipse.f for only ellipses.
fitting to noisy circles |
fitting noisy ellipses |
fitting noisy hyperbolas |
fitting noisy parabolas |