Matlabpolyfit函数程序function[p,S,mu] = polyfit(x,y,n) %POLYFIT Fit polynomial to data. % P = POLYFIT(X,Y,N) finds the coefficients of a polynomial P(X) of % degree N that fits the data Y best in a least-squares sense. P is a...
inputs x,y: float: double, singlepolyfit.m 在matlab安装目录下 toolboxmatlabpolyfunfunction p,s,mu = polyfit(x,y,n)%polyfit fit polynomial to data.% p = polyfit(x,y,n) finds the coefficients of a polynomial p(x) of% degree n that fits the data y best in a least-squares sense....
function[p,S,mu]=polyfit(x,y,n) %POLYFITFitpolynomialtodata. %P=POLYFIT(X,Y,N)findsthecoefficientsofapolynomialP(X)of %degreeNthatfitsthedataYbestinaleast-squaressense.Pisa %rowvectoroflengthN+1containingthepolynomialcoefficientsin %descendingpowers,P(1)*X^N+P(2)*X^(N-1)+...+P(N)*X...
Evaluate the original function and the polynomial fit on a finer grid of points between 0 and 2. x1 = linspace(0,2); y1 = 1./(1+x1); f1 = polyval(p,x1); Plot the function values and the polynomial fit in the wider interval[0,2], with the points used to obtain the polynomial...
how can Integrate polyfit in matlab ? ? . Learn more about polyfit, matlab function, matlab MATLAB
Why is the POLYFIT function in MATLAB unable to find a fit over my data values for 3rd and 4th order polynomial.http://www.mathworks.com/matlabcentral/answers/98325-why-is-the-polyfit-function-in-matlab-unable-to-find-a-fit-over-my-data-valuesHi ...
I am trying to find the function that best fits the data, but going through the steps, I am battling with fitting a straight line to the transformed data. I'm using the polyfit function, but I'm getting a NaN (Not a Number) error. Please assist by pointing out my mistake based on...
Open in MATLAB Online Download Modified version of GRABIT by Jiro Doke, see this function for the full original description. Jiro Doke deserves all the credit, I just found this modification useful and would like to share it to those who can also use it. ...
若提示 MATLAB:polyfit:RepeatedPoints,考虑添加更多的不同的拟合点 若提示 MATLAB:polyfit:RepeatedPointsOrRescale,考虑1、添加更多的不同的拟合点;2、减少多项式的次数 源码阅读 function [p,S,mu] = polyfit(x,y,n) %POLYFIT Fit polynomial to data. % P = POLYFIT(X,Y,N) finds the coefficients of ...
function y=hermite(X,Y,y1,x) n=length(X); m=length(x); for i=1:m y0=0; for j=1:n h=1; a=0; for k=1:n if k~=j h=h*((x(i)-X(k))/(X(j)-X(k)))^2; a=1/(X(j)-X(k))+a; end end y0=y0+h*(((X(j)-x(i))*(2*a*Y(j)-y1(j))+Y(j))); en...