How to draw a simple triangle?

Question

Adnan Ali 2014-11-22

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/163879-how-to-draw-a-simple-triangle

评论： Daniel Arreguìn 2021-12-28

I want to draw two simple triangles, (equilateral triangles). Then when i will click on one of the triangle and it will save its values in any file e.g Excel sheet. so any one can help it would be pleasure. Thanks in advance.

My Matlab level is moderate. i dont know too much about it.

Note: I know how to save values in excel. but don't know other stuff.

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Answer 1

Konstantin Ninidze 2021-4-13

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/163879-how-to-draw-a-simple-triangle#answer_674281

编辑：Image Analyst 2021-4-13

在 MATLAB Online 中打开

Try this:

p = nsidedpoly(3, 'Center', [1 ,1], 'SideLength', 1);
plot(p);

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Ahmed Elakhder 2021-5-27

how can I draw a rotated triangle with a certain angle?

Daniel Arreguìn 2021-12-28

If you use the same example must be:

p_rotated=rotate(p,theta,rotation_center)

plot(p_rotated)

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Answer 2

Image Analyst 2014-11-23

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/163879-how-to-draw-a-simple-triangle#answer_159895

在 MATLAB Online 中打开

You can use line or plot.

line([x1,x2], [y1, y2], 'Color', 'r');
hold on;
line([x2,x3], [y2, y3], 'Color', 'r');
line([x3,x1], [y3, y1], 'Color', 'r');
% get user input
[x, y] = ginput(1);
if inpolygon(..............