matlab 极坐标曲线拟合方程怎么求?答:R = [320,321,341,375,420,450,460,466,474,468,466,466,466,466,466,466,466,461,443,420,400,383,360,337,320];plot(theta,R,'o');将数据标准化 theta1 = (theta-mean(theta))./std(theta);p=polyfit(theta1,R,8);pval=polyval(p,theta1);hold on;plot(theta,pval);...
如何用Matlab根据测量点拟合成封闭曲线答:先进行坐标变换,再插值,然后再反变换。效果还算可以。例如:已知点有八个点,横坐标依次为:x = [1 , 0.707 , 0 , -0.707 , -1 , -0.707 , 0 , 0.707];对应纵坐标依次为y = [0 , 0.707 , 1 , 0.707 , 0 , -0.707 , -1 , -0.707 ];对其进行直角坐标与极坐标...