源码文件
x0=-1+2*[0:10]/10; y0=1./(1+25*x0.^2); x=-1:.01:1; y=lagrange(x0,y0,x); % Lagrange 插值 ya=1./(1+25*x.^2); plot(x,ya,x,y,':') …
Cubic+Spline 源代码
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源码文件
x0=-1+2*[0:10]/10; y0=1./(1+25*x0.^2); x=-1:.01:1; y=lagrange(x0,y0,x); % Lagrange 插值 ya=1./(1+25*x.^2); plot(x,ya,x,y,':') …
源码文件
x0=-1+2*[0:10]/10; y0=1./(1+25*x0.^2); x=-1:.01:1; y=lagrange(x0,y0,x); % Lagrange 插值 ya=1./(1+25*x.^2); plot(x,ya,x,y,':') …
源码文件
[x,y]=meshgrid(-3:.6:3, -2:.4:2); z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y); mesh(x,y,z), axis([-3,3,-2,2,-0.7,1.5]) [x1,y1]=meshgri…
源码文件
[x,y]=meshgrid(-3:.6:3, -2:.4:2); z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y); mesh(x,y,z), axis([-3,3,-2,2,-0.7,1.5]) [x1,y1]=meshgri…
源码文件
x=0:9; x1=0:0.01:9; y=[0,1.8,2.1,0.9,0.2,-0.5,-0.2,-1.7,-0.9,-0.3]; y1=interp1(x,y,x1,'nearest'); y2=interp1(x,y,x1,'linear');…
源码文件
[x,y]=meshgrid(-3:.6:3, -2:.4:2); z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y); mesh(x,y,z), axis([-3,3,-2,2,-0.7,1.5]) [x1,y1]=meshgri…
源码文件
[x,y]=meshgrid(-3:.6:3, -2:.4:2); z=(x.^2-2*x).*exp(-x.^2-y.^2-x.*y); mesh(x,y,z), axis([-3,3,-2,2,-0.7,1.5]) [x1,y1]=meshgri…
源码文件
x=0:9; x1=0:0.01:9; y=[0,1.8,2.1,0.9,0.2,-0.5,-0.2,-1.7,-0.9,-0.3]; y1=interp1(x,y,x1,'nearest'); y2=interp1(x,y,x1,'linear');…
源码文件
function v = splinetx(x,y,u) %SPLINETX Textbook spline function. % v = splinetx(x,y,u) finds the piecewise cubic interpolatory…