非均匀有理B样条的源代码 最好用MATLAB做 谁知道啊 急用答:b=zeros(n,yd);b(2:n-1,:)=3*(dx(2:n-1,dd).*divdif(1:n-2,:)+dx(1:n-2,dd).*divdif(2:n-1,:));if notaknot x31=x(3)-x(1);xn=x(n)-x(n-2);b(1,:)=((dx(1)+2*x31)*dx(2)*divdif(1,:)+dx(1)^2*divdif(2,:))/x31;b(n,:)=...(dx(n-...
MATLAB中,已知三次非均匀B样条的控制顶点,那节点向量怎么确定,程序怎么...答:x=[-3.9719,-3.0162,-1.0705,-0.1528,0.3196,2.8027];y=[ 2.2084, 2.3414, 0.07228, 2.299, -2.7752, 3.0278];pp=spline(x,y);xx=0:0.01:3;yy=spline(x,y,xx);plot(xx,yy)按上面语句试试