x=[129 140 103.5 88 185.5 195 105.5 157.5 107.5 77 81 162 162 117.5];
y=[7.5 141.5 23 147 22.5 137.5 85.5 -6.5 -81 3 56.5 -66.5 84 -33.5];
z=[-4,-8,-6,-8,-6,-8,-6,-8,-8,-9,-9,-5,-7,-2];
cx=75:0.5:200;
cy=-70:0.5:150;
cz=griddata(x,y,z,cx,cy','cubic');
meshz(cx,cy,cz)
其中小x,y为对应地点坐标
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