Apr 18, 2020 · "Hi, I have an irregualar 3d surface plot build just with faces and vertices. Now I want to select 3 random points from the plot and automatically draw a triangle with these corner points on top of the surface (so that the triangle nestles on the given 3D surface)."

May 10, 2017 · I have these 3 points: A= [30,0,0]; B= [0,40,0]; C= [0,0,10]; How can I draw a triangle which has the 3 nodes by A,B,C in 3 dimensional space?

Use triangulation to create an in-memory representation of any 2-D or 3-D triangulation data that is in matrix format, such as the matrix output from the delaunay function or other software tools.

trisurf(T,x,y,z) plots the 3-D triangular surface defined by the points in vectors x, y, and z, and a triangle connectivity matrix T.

Apr 20, 2019 · How to draw three dimenstional plots in MATLAB? MATLAB 3D plot examples explained with code and syntax for Mesh, Surface Ribbon, Contour and Slice. In this tutorial, I am decribing the classification of three dimentional [3D] MATLAB plot.

Sep 1, 2015 · Generating the grid of points using meshgrid. Plotting the points using plot3. Making the text visible using text. Drawing the black vertical line using line and setting the axes labels. Step #1 - Drawing the triangle. The best thing to create that triangle is to use the patch function.

Jan 31, 2015 · You can use plot3() like this: v1=[1 1 1]; v2=[-1 1 1]; v3=[-2 -2 -2]; triangle = [v1(:), v2(:), v3(:), v1(:)]; plot3(triangle(1, :), triangle(2, :), triangle(3, :)) xlabel('x'); ylabel('y'); zlabel('z'); This is the output:

When working with 3D visualization in MATLAB, several fundamental commands facilitate the process of plotting data in three-dimensional space. Among these, the functions plot3, mesh, and surf are paramount for creating a variety of 3D plots.

plot3(X1,Y1,Z1,...,Xn,Yn,Zn) − This method helps to plot multiple sets of coordinates on the same set of axes. plot3(X1,Y1,Z1,LineSpec1,...,Xn,Yn,Zn,LineSpecn) − The plot3 function allows assigning distinct line styles, markers, and colors to individual XYZ triplets.LineSpec can be specified for certain triplets and left out for others.

Represent 2-D or 3-D triangulation data as a triangulation object, and use object functions to compute geometric quantities. You can visualize the triangulation and work with STL files to read and write triangulation data.