matlab如何求由点以及拟合成的曲线以及真实曲线的误差之和 x1=0:1:10; y1=3*x1.^2+2*x1+6; z=0:0.001:10; y=spline(x1,y1,z); plot(x1,y1,z,y,'MarkerSize',12);N=length(z);RMES=sqr(sum((y1-y).^2)/(N-1));但是问题是y1
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![matlab如何求由点以及拟合成的曲线以及真实曲线的误差之和 x1=0:1:10; y1=3*x1.^2+2*x1+6; z=0:0.001:10; y=spline(x1,y1,z); plot(x1,y1,z,y,'MarkerSize',12);N=length(z);RMES=sqr(sum((y1-y).^2)/(N-1));但是问题是y1](/uploads/image/z/5583563-35-3.jpg?t=matlab%E5%A6%82%E4%BD%95%E6%B1%82%E7%94%B1%E7%82%B9%E4%BB%A5%E5%8F%8A%E6%8B%9F%E5%90%88%E6%88%90%E7%9A%84%E6%9B%B2%E7%BA%BF%E4%BB%A5%E5%8F%8A%E7%9C%9F%E5%AE%9E%E6%9B%B2%E7%BA%BF%E7%9A%84%E8%AF%AF%E5%B7%AE%E4%B9%8B%E5%92%8C+x1%3D0%3A1%3A10%3B+++y1%3D3%2Ax1.%5E2%2B2%2Ax1%2B6%3B+++z%3D0%3A0.001%3A10%3B+++y%3Dspline%28x1%2Cy1%2Cz%29%3B+++plot%28x1%2Cy1%2Cz%2Cy%2C%26%2339%3BMarkerSize%26%2339%3B%2C12%29%3BN%3Dlength%28z%29%3BRMES%3Dsqr%28sum%28%28y1-y%29.%5E2%29%2F%28N-1%29%29%3B%E4%BD%86%E6%98%AF%E9%97%AE%E9%A2%98%E6%98%AFy1)
matlab如何求由点以及拟合成的曲线以及真实曲线的误差之和 x1=0:1:10; y1=3*x1.^2+2*x1+6; z=0:0.001:10; y=spline(x1,y1,z); plot(x1,y1,z,y,'MarkerSize',12);N=length(z);RMES=sqr(sum((y1-y).^2)/(N-1));但是问题是y1
matlab如何求由点以及拟合成的曲线以及真实曲线的误差之和
x1=0:1:10;
y1=3*x1.^2+2*x1+6;
z=0:0.001:10;
y=spline(x1,y1,z);
plot(x1,y1,z,y,'MarkerSize',12);
N=length(z);
RMES=sqr(sum((y1-y).^2)/(N-1));
但是问题是y1和y的size不一样···怎么减啊应该···就是想知道两条线直接缝隙的面积之和··谢谢哈
matlab如何求由点以及拟合成的曲线以及真实曲线的误差之和 x1=0:1:10; y1=3*x1.^2+2*x1+6; z=0:0.001:10; y=spline(x1,y1,z); plot(x1,y1,z,y,'MarkerSize',12);N=length(z);RMES=sqr(sum((y1-y).^2)/(N-1));但是问题是y1
x1=0:1:10;
y0=3*x1.^2+2*x1+6;
z=0:0.001:10;
y=spline(x1,y0,z);
y1=interp1(x1,y0,z);
plot(x1,y0,z,y,z,y1,'-r');
N=length(z);
RMES=sqrt(sum((y1-y).^2)/(N-1))
RMES =
0.5477