大家好，我在拟合两个曲面，想找到匹配的方程，用了matlab里面的插值，插值之后再用工具箱进行拟合效果不是很好：
我目前的1stOpt软件还是不能用，目前有2个曲面需要拟合，请大家帮帮忙，再帮忙把代码发一下，因为我想在我电脑上画出来，谢谢！:handshake
x1=[20,25,30,31.25,35,40,45,50,55,57.5,60];
x2=[65,67.5,70,75,80,85,90,93.75,95,100];
y= 0.1:0.1:0.5;
%z轴数据
z1 =[162.5625 162.0274 162.6135 162.639 161.9002 162.4605 162.0529 162.4095 161.8238 161.6967 162.3331;
162.384 162.3586 162.3586 162.2566 162.0529 162.1548 161.8238 161.5187 159.3401 159.0121 159.896;
162.2312 162.3331 162.1293 161.7984 161.773 161.4933 161.0869 159.719 155.7254 154.7038 155.4261;
162.0529 162.1802 161.8238 161.3662 161.2646 160.6303 159.5422 157.3268 151.807 150.5038 150.9704;
161.7221 161.8747 161.2392 160.7317 160.4529 159.1635 157.4774 154.6292 147.6468 146.5552 146.7248; ];
z2 =
[162.69 160.7063 161.9256 162.2821 162.435 162.2566 162.3331 162.5115 162.384 162.435;
160.225 155.3513 158.7852 161.6204 162.435 162.2566 162.3076 162.435 162.537 162.435;
157.0009 150.3076 155.0772 159.6938 161.9511 162.0274 161.9511 162.3586 162.486 162.2057;
154.8034 145.9747 152.2262 157.7034 161.0615 161.7221 161.6712 162.2312 162.3586 162.002;
153.2892 142.5397 149.4017 155.7754 159.896 160.9853 161.3154 162.0274 162.1548 161.8493;];