calculate the normal of a 3D plane
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Hi! I have a circular plane, whose coordinates of the points of the circumference are:
P = importdata("node_plane.mat");
plot3(P(:,1),P(:,2),P(:,3))
I would like to know if it is correct to calculate the normal of this plane in the following way:
N = cross(P(1,:) - P(2,:), P(3,:) - P(2,:));
N = N/norm(N);
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Torsten
2024 年 5 月 16 日
移動済み: Torsten
2024 年 5 月 16 日
I would like to know if it is correct to calculate the normal of this plane in the following way:
N = cross(P(1,:) - P(2,:), P(3,:) - P(2,:));
N = N/norm(N);
If you are sure that all points lie in exactly one plane: yes, you can choose any three points and do as you did above.
If you first need to fit a plane to your data points: no.
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