How can I find the surface normal of a 8 by 3 matrix?

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Henry Canova
Henry Canova 2019-11-20
回答： darova 2019-11-20
I am attempting to find the surface normal of a 8 by 3 matrix in matlab. The matrix is
x = [0,228.6,-228.6,0,-114.3,114.3,114.3,-114.3];
y = [514.35,285.75,285.75,57.15,101.6,101.6,400.05,400.05];
z = [1873,1873,1909,1903,1909,1887,1869,1895];

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回答（1 个）

darova
darova 2019-11-20
  • Use griddata to create a surface
  • Use surfnorm to find normal vectors
[nx,ny,nz] = surfnorm(x,y,z);
surf(x,y,z)
hold on
quiver3(x,y,z,nx,ny,nz)
hold off

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