搜索资源列表
fuben
- 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 cur
prony_analysis
- 复指数法是根据结构的自由振动响应或脉冲响应函数可以表示为复指数函数和的形式,然后用线性方法来确定未知参数。其主要思想是从振动微分方程的振型叠加法原理出发,建立动力响应与模态参数之间的关系表达式,通过对脉冲响应函数进行拟合可以得到完全的模态参数,获得了良好的拟合效果。基本方法是以Z变换因子中包含待识别的频率,构造Prony多项式,使其零点等于Z变换因子的值。这样,将求解Z变换因子转化为求解Prony多项式的系数。这里给出用矩阵解Prony多项式的系数的MATLAB程序。
Allan
- 计算MEMS陀螺的Allan方差,并求出与Allan方差相关的五个系数,最后在求出拟合误差-Allan variance calculation of MEMS gyroscope, and find the Allan variance associated with the five factors, and finally find the fitting error
TCWIN
- 这是一款拟合曲线的软件,只要有数据,就能拟合成各类方程的函数,找出对应的系数。-This is a fitting curve of the software, as long as there is data, can be a function of synthesis of various types of equations to find the corresponding coefficient.
2
- 取二十一个点来进行拟合,求出曲线各个系数,效果很好。-Get 21 points for fitting curves to derive the various coefficients, the effect well.
Absorptioncoefficientprofile
- 吸收系数的累积概率分布函数,包括利用marlab进行曲线的拟合-Absorption coefficient of the cumulative probability distribution function, including the use of marlab for Curve Fitting
ZXECF
- 最小二乘法2次曲线拟合应用已有的采样时间点,再现这些点所描述的2次曲线的变化,即求出一个二次曲线方程y=ax2+bx+c这个算法的主要问题也就是如何用给定的数据求方程系数abc-Least squares curve fitting application 2 has a sampling time points, reproduce these points 2 are described the change curve, which obtained a quadratic equatio
curvefit
- 调用方法: CurveFitting fitting = new CurveFitting() double[] xs = fitting.Fitting(xv, yv, n, m) 说明: 拟合函数:double[] xs=Fitting(int[] xval, double[] val, int n, int m) xval:点的横坐标 val:点的纵坐标值 n:欲拟合多项式的最高次数 m:拟合点的个数 数组xs为返回的多项式系数,次数从0到n。如有问题,请发送邮件至ga
pp
- 最小二乘法曲线拟合程序,输出有拟合误差,拟合曲线的系数-Least-squares curve fitting procedure, the output error with fitting, curve fitting coefficient
Polyfit
- 曲线拟合,计算曲线方程的系数。C#类文件,可以直接调用,方便快捷。-Curve fitting, curve equation calculating the coefficients. C# class file that can be called directly, convenient and quick.
zernike
- 镜片面形数据通过zernike多项式用协方差方法拟合得到的zernike系数-Zernike coefficients covariance fitting
circfit
- 用于拟合圆心坐标及求取包络半径,式中半径R求取需根据需求更改系数。-Use for fitting the circle center and calculate the radius, the variables of R can be changed by the parameter in consider of your meet.
u-6
- 涡度通量数据处理,坐标旋转之平面拟合坐标旋转,系数计算-Eddy flux data processing, the rotation of the coordinate plane fitted coordinate rotation, coefficient
nisannihe
- 运用离散分布函数拟合数据,通过变异系数的平方和可决系数选择最佳模型-Using a discrete distribution function to fit the data, the best model by squaring and the coefficient of variation coefficient of determination
linear
- 线性拟合小程序,能够计算出拟合函数及相关系数-Linear fit small program that can calculate the fit function and the correlation coefficient
DEM内插
- DEM内插就是根据参考点上的高程求出其他待定点上;(1)根据实际内插要求,解算待定点P的平面坐标(;(2)为了选取邻近的数据点,以待定点P为圆心,以;由于二次曲面系数个数为6,要求选用的数据点个数n;满足要求;vi=Ax2+Bxy+Cy2+Dx+Ey+F-Z;由n个数据点列出的误差方程为v=MX-Z;(Is inserted according to the elevation reference point for other fixed point DEM; (1) according to
MATLAB 求最小二乘法系数
- 用MATLAB进行三次曲线的拟合,并运用最小二乘法求各个系数,得出曲线方程(The three curves are fitted with MATLAB, and the coefficients are obtained by using the least square method, and the curve equation is obtained.)
曲线拟合
- 最小二乘法实现曲线拟合,返回拟合多项式系数(Least Squares Method for Curve Fitting)
MLS
- MLS(移动最小二乘) 1.拟合函数的建立不同。这种方法建立拟合函数不是采用传统的多项式或其他函数,而是通过系数向量和基函数来决定在某个x处的值。 2.引入紧支的概念,认为在x处的值y只受到x附近子域内的节点的影响。这个子域称作是x的影响区域,影响区域外的节点对x处的取值没有影响。影响区域内的每个节点对x处的取值的影响是不一样的。所以需要一个权函数来定义每个节点的影响。(MLS (Moving Least Squares) July 25, 2018 15:42:20 blank_downdo
多项式和非多项式曲线拟合
- 多项式拟合在matlab中可以使用ployfit函数求解多项式系数,通过ployval函数求解拟合多项式在某数据点处的值(Polynomial and Non-polynomial Curve Fitting)