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实验2-插值与拟合
- 1、掌握用MATLAB计算拉格朗日、分段线性、三次样条三种插值的方法,改变节点的数目,对三种插值结果进行初步分析。 2、掌握用MATLAB作线性最小二乘的方法。 3、通过实例学习如何用插值方法与拟合方法解决实际问题,注意二者的联系和区别。-1. Grasp by matlab calculating Lagrange, segement linear, 3rd order spline these 3 interpolation method. Analisize the 3 interpola
functionz1
- 寻找三次样条多项式需要求解大量的线性方程。实际上,给定N个断点,就要寻找N-1个三次多项式,每个多项式有4个未知系数。这样,所求解的方程组包含有4*(N-1)个未知数。把每个三次多项式列成特殊形式,并且运用各种约束,通过求解N个具有N个未知系数的方程组,就能确定三次多项式。 -find cubic spline solving polynomial need a lot of linear equations. In fact, given N breakpoints, it is nece
CMatrixClass
- 1.内存管理一律根据实际需要的大小在堆中动态分配内存。 2.边界检查。如果数组下标超越了数组大小界限,会给出警告信息,可以防止非法内存访问以及方便程序的调试。 3.重载了+,-,*,+=,-=,数乘等常见运算符; 4.可以保存数组为二进制数据文件和文本文件两种形式,也可以从二进制数据文件和文本文件读取数据到数组。 5.实现了和矩阵相关的线性代数方程组求解算法。一是高斯选主元消去法二是针对三对角矩阵的追赶法。 6.静态函数Bspline3():3次
jisuanff
- 含有线性插值, 样条插值,Gauss矩阵列主元消去法等算法的实现 -with linear interpolation, spline interpolation, Gauss matrix main-element elimination algorithm Law Implementation
image resampling
- %This is a simple function that resamples the image %at a different pixel size function nimg = imresample(oldpixsize,img,newpixsize,intmethod) % This function resamples the images at the new grid points % defined by the new pixel sizes. It
MATLAB实现拉格朗日、分段线性、三次样条三种插值的方法
- MATLAB实现拉格朗日、分段线性、三次样条三种插值的方法,改变节点的数目,对三种插值结果进行初步分析,MATLAB realization of Lagrange, piecewise linear, cubic spline interpolation in three ways, changing the number of nodes, interpolation of three preliminary analysis of the results
integratedgradient
- 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 h
123456
- 根据所给样本数据用三种不同的方法绘制该公路并估计其长度。 分别用线性插值法、最近邻域插值法和三次样条插值法计算公路长度,并用勾股定理估计公路的长度 -According to the sample data in three different ways, the road map and estimate its length. , Respectively, by linear interpolation, nearest neighbor interpolation domain
main
- 分段线性插值,分段二次多项式插值,分段三次多项式插值,三次样条插值-Piecewise linear interpolation, sub-quadratic polynomial interpolation, sub-cubic polynomial interpolation, cubic spline interpolation
analysis2
- 数值分析B计算实习作业二:分别用分段线性插值、分段二次多项式插值、 分段三次多项式插值和三次样条插值对所给的数据进行细化 -Numerical Analysis of B calculated internship operation II: piecewise linear interpolation, respectively, sub-quadratic polynomial interpolation, sub-cubic polynomial interpolation and
chazhi
- 利用牛顿、拉格朗日、三次样条及线性插值方法拟合数据-The use of Newton, Lagrange, cubic spline and linear interpolation method of fitting data
Interpolation
- 包括线性插值,二次插值,三次hermit插值,以及三弯矩法样条插值。-Including linear interpolation, quadratic interpolation,hermit interpolation,and spline interpolation.
interpoints
- vc下实现的分段线性插值、二次多项式插值、三次多项式插值、三次样条插值,并配有MATLAB测试程序-vc implementation of the piecewise linear interpolation, quadratic interpolation, cubic polynomial interpolation, cubic spline interpolation, and test procedures with MATLAB
interp
- 实现拉朗日插值、线性插值、样条插值,用MATLAB计算两种二维插值的方法。-Implementation date lalang interpolation, linear interpolation, spline interpolation, calculated using MATLAB in two methods of two-dimensional interpolation.
fenduanxianxingchazhi
- 分段线性样条差值的matlab仿真,用于数值计算-Piecewise linear spline margin matlab simulation, for the numerical calculation
optionchoose
- 在开发子函数时,matlab存在正则方法和非正则方法,正则方法非常适合一个子函数功能的不断扩展与完善,此函数为辅助函数,增加子函数的可读性 例如一个函数drawfun(x,y,z,5,6),5表示用第5种方法插值,6表示markersize为6,它显然没有drawfun(x,y,z, kriging , markersize ,6)好看懂与理解。 kriging 如何就是5可以用optionchoose(varargin{4},{ linear , spline , inverse , re
interpolation_approximation_Linear_spline_Lagrang
- interpolation, approximation, linear spline
channel_estimation
- for LS/DFT Channel Estimation with linear/spline interpolation
channel_estimation
- for LS/DFT Channel Estimation with linear/spline interpolation
非参数估计SO2浓度
- 用5种非参数方法:线性样条、B样条、N-W核估计、最近邻估计、局部多项式对某地SO2浓度数据进行拟合。(5 non parametric methods: linear spline, B spline, N-W kernel estimation, nearest neighbor estimation, and local polynomial are used to fit the SO2 concentration data in a certain area.)
