how to plot 3d pyramid ?

Question

Brasco , D. 2015-10-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/247269-how-to-plot-3d-pyramid

评论： Brasco , D. 2015-10-7

采纳的回答： Thorsten

Hi guys i got confused about ploting 3-D pyramid.

Here ara the edge coordinates of the pyramid.

pt1=[0 0 0]; pt2=[10 0 0]; pt3=[10 -10 0]; pt4=[0 -10 0]; pt5=[0 0 5];

How can i plot it with all of its surfaces ?

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Answer 1

Thorsten 2015-10-7

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/247269-how-to-plot-3d-pyramid#answer_195048

在 MATLAB Online 中打开

P = [pt1; pt2; pt3; pt4; pt5]
ind = [1 2 5]; patch(P(ind, 1), P(ind, 2), P(ind, 3), 'r')
hold on
ind = [2 3 5]; patch(P(ind, 1), P(ind, 2), P(ind, 3), 'r')
ind = [3 4 5]; patch(P(ind, 1), P(ind, 2), P(ind, 3), 'r')
ind = [4 1 5]; patch(P(ind, 1), P(ind, 2), P(ind, 3), 'r')

And for the base

ind = 1:4; patch(P(ind, 1), P(ind, 2), zeros(1,4), 'b')

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Brasco , D. 2015-10-7

First of all, thank you for your answer.

Your code works but i gave that points for a simple case. My actual problem contains about geographic coordinates and altitudes. I need a generic code, such as given any 5 points it will draw a pyramid.

Thank you for your contribution again.

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