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Chenglin Li


Last seen: 8 months ago |  Active since 2021

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Modifying the graphical viewpoint
The perspective of the graph I generated in matlab is I want the graphic to be displayed in the following viewpoint, how shou...

8 months ago | 1 answer | 0

1

answer

Question


Getting information about tetrahedral elements after mesh encryption
I generated the base mesh with existing information including point and tetrahedral element information But now I marked some...

9 months ago | 0 answers | 0

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answers

Question


Enables local refinement at mesh markers
I have marked the surfaces in the mesh that I want to refine and the tetrahedra where the faces are located (the row indexes and...

10 months ago | 0 answers | 0

0

answers

Question


Ensure that the normal phase of the normal is outward
I have taken normals for each boundary surface and after unitization they point to the outside of the geometry, but a small port...

11 months ago | 1 answer | 0

1

answer

Answered
Add units to the chart
set(gca,'XTick',[10.5*10^9:0.2*10^9:11.5*10^9]) xlabel('Frequency (Hz)'); My code looks like this, but after running it my hor...

1 year ago | 0

Question


Add units to the chart
I want to add (x10^9) to the end of the horizontal coordinate, something like this, how should I program it？

1 year ago | 2 answers | 0

2

answers

Question


Find discontinuous areas in geometry
There is an stl file of a concave surface, known the vertices and joint indexes of each face, as well as the normal vectors of e...

1 year ago | 0 answers | 0

0

answers

Question


Find the corresponding matrix
My matrix A is going to be an n by 4 matrix, and B is going to be an m by 1 column matrix, and I want to find all the columns in...

1 year ago | 1 answer | 0

1

answer

Question


Merge the four faces belonging to a tetrahedron
Hi,I have the element information of a mesh but the mesh is too sparse. I extract all the faces of the mesh element and appl...

1 year ago | 1 answer | 0

1

answer

Answered
Generates normals with multiple three-point coordinates
Thank you very much. I wanted to generate a concave surface before, but the figure was not what I wanted. After your program tes...

2 years ago | 0

Question


Generates normals with multiple three-point coordinates
Hi！,I wanted to generate multiple three-dimensional coordinate normals in matlab and output them in fixed format to generate stl...

2 years ago | 2 answers | 0

2

answers

Question


Using matlab to generate complex graphics stl file
Hi, I have been able to use matlab to generate cuboid stl files, but the stl files of concave bodies always make mistakes, becau...

2 years ago | 0 answers | 0

0

answers

Question


matlab reads the.geo file
Hello!I have a.geo file, I want to extract all the information in it in matlab, all the Point, Line, Line Loop, Plane Surface, h...

2 years ago | 1 answer | 0

1

answer

Question


matlab generated.stl file
Is there any program that can generate 3D graphics from matlab.stl file? I tried stlwrite.m and it seems that there are only two...

2 years ago | 1 answer | 0

1

answer

Question


Each time you run the program, a new.msh file is generated
I can generate a.msh file format file through this code filename=['lin','.msh'] ; fid=fopen(filename,'w'); But every time I r...

2 years ago | 1 answer | 0

1

answer

Question


Delete rows with the same data in the matrix
Let's say I have a matrix, and I want to get rid of the duplicates and keep them once, so I can use unique, but I want to get ri...

2 years ago | 1 answer | 0

1

answer

Question


Find the desired row in the matrix
Hello! I have a matrix, the first three rows are the x, y, and z coordinates of the points, the fourth row is the sum of the fir...

2 years ago | 2 answers | 0

2

answers

Question


How can I create a Delanay point in a cube?
I want to generate Mesh for a cube,but the points inside the cube can only be regularly distributed so far, and I want the surfa...

2 years ago | 2 answers | 0

2

answers

Answered
Error in 3D Delaunay Triangulation
HI Nathan, I'm making a concave mesh, and I have some problems,Is your 3D program open source？

3 years ago | 0