Diferencia entre revisiones de «Draw a system of points»
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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 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: | ||
Revisión del 11:15 4 nov 2014
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
x=[1 1 -1 -1;1 -1 -1 1;0 0 1 1]; % coordinates of the points
figure(1)
plot3(x(1,:),x(2,:),x(3,:),'o-','MarkerFaceColor','b') % Draw the points
axis([-2,2,-2,2,-2,2]) % select region for drawing
2 To go further
Mesh of a parametrized 2-D solid
Visualization of a scalar field in a solid
