[原创]matlab绘制的悬链面（含光源设置、剪切面等）

huright

源程序：

1. a=linspace(-50,50,100);
   
2. y=30*cosh(a/30);
   
3. [X,Y,Z]=cylinder(y,50);
   
4. ii=find(X<0&Y<0);
   
5. Z(ii)=NaN;
   
6. surf(X,Y,Z);
   
7. colormap(spring),shading interp
   
8. light('position',[-3,-1,3],'style','local')
   
9. material([0.5,0.4,0.3,10,0.3])

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