Easy CurveFit This application is a very easy tool to fit curve
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Easy CurveFit Description

Easy CurveFit is a very easy tool to fit curve. Only three steps you should do, and you'll get the fitting curve and the needed parameters. The models include linear and nonlinear. Regressions: · Linear Fit, y=a+bx; · Quadratic Fit, y=a+bx+cx^2; · Compound Fit, y=ab^x; · Logatithmic Fit, y=a+b*ln(x); · Exponential Fit, y=a*exp(bx); · Power Fit, y=a*x^b; · Inverse Fit, y=a+b/x; · hyperbola Fit, y=ax/(b+x); · Geometric Fit, y=ax^(bx); · Geometric Fit, y=ax^(b/x); Main features: Fitting a circle by geometric fit: Coope approaches the problem of trying to find the best visual fit of circle to a set of 2D data points. The method elegantly transforms the ordinarily non-linear problem into a linear problem that can be solved without using iterative numerical methods, and is hence an order of magnitude faster than previous techniques. Fitting an ellipse by geometric fit: The above technique is extended to general ellipses by adding a non-linear step, resulting in a method that is fast, yet finds visually pleasing ellipses of arbitrary orientation and displacement. Application to surfaces: Note that while this discussion was in terms of 2D curves, much of this logic also extends to 3D surfaces, each patch of which is defined by a net of curves in two parametric directions, typically called u and v. A surface may be composed of one or more surface patches in each direction.

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