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Description: 在CAD中，用分段三次B样条来表达自由曲线是很理想的，为此，采用三次B样条曲线来拟合这条折线. ... 其中， 3d.gif (1661 bytes) ，确定了系数a、b、c，相应地就确定了拟合函数. 3)确定型值点求出拟合函数后，取点Pk((1/2)l，yp)作为型值点. ...
-in CAD, and cubic B-spline curves to the freedom of expression would be the ideal, for cubic B-spline curve fitting of the dogleg. them .... 3d.gif (1661 bytes), to determine the coefficients a, b, c, corresponding to determine a fitting function. 3) to determine the value was calculated - fitting function, collocation Pk ((1 / 2) l, yp) as the data points. ...
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Size: 1130169 |
Author: qingqiu |
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Description: 很多几何图形的画法，如三维图形、曲线及曲面的绘制，三次样条曲线，BEYOND，曲面，Beziel曲线等-many geometric shapes of paint, such as 3D graphics, curve and surface mapping, cubic spline curve, BEYOND, surface, curve Beziel
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Size: 524926 |
Author: exc |
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Description: 很多几何图形的画法，如三维图形、曲线及曲面的绘制，三次样条曲线，BEYOND，曲面，Beziel曲线等-many geometric shapes of paint, such as 3D graphics, curve and surface mapping, cubic spline curve, BEYOND, surface, curve Beziel
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Size: 524288 |
Author: exc |
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Description: The inverse of the gradient function. I ve provided versions that work on 1-d vectors, or 2-d or 3-d arrays. In the 1-d case I offer 5 different methods, from cumtrapz, and an integrated cubic spline, plus several finite difference methods.
In higher dimensions, only a finite difference/linear algebra solution is provided, but it is fully vectorized and fully sparse in its approach. In 2-d and 3-d, if the gradients are inconsistent, then a least squares solution is generated
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Size: 11264 |
Author: 徐亮 |
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Description: 三次样条插值，需要三次样条插值的可以下载这个包，也许对你有帮助-cubic spline curve
Platform: |
Size: 2048 |
Author: shanshan |
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Description: 1. 最小二乘法拟合数据成直线。
2. 三次样条插值。
3. 两个3D演示程序（用程序直接在平面上画的三维图像）。-自动翻译的：1 a linear least-squares fitting the data. 2 cubic spline interpolation. 3 two 3D demo program (application directly on the painting in three-dimensional image plane).
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Size: 322560 |
Author: zbj |
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