Draw a system of points
We show how to draw a system of points in 3D. The objective is to represent a rigid body as a system of [math] N [/math] mass particles in such a way that the relative position of the points is fixed. We start with the simplest example, the four corners in a square. We follow the steps:
- We introduce a vector [math]3 \times N [/math] that contains in each column the three cartesian components of each point
- We plot the points with plot3 command
- We adjunst the axis.
1 MATLAB code
1 x=[1 1 -1 -1;1 -1 -1 1;0 0 1 1]; % coordinates of the points 2 figure(1) 3 plot3(x(1,:),x(2,:),x(3,:),'o-','MarkerFaceColor','b') % Draw the points 4 axis([-2,2,-2,2,-2,2]) % select region for drawing