problem with the patch function Warning: Error creating or updating Patch "Error in value of one or more of the following properties: Faces Vertices Values in Faces must lie within the range, 1 and number of vertices"

Hallo people

I have been using Matlab for a week and have the task of programming a 3D figure. The figure must consist of several small figures and I have already managed to program one small figure, but I have difficulty adding a second small figure. I keep getting an error: Warning: Error creating or updating Patch

Error in value of one or more of the following properties: Faces Vertices

Values in faces must lie within the range, 1 and number of vertices. I will be very grateful to you if you can help me. I apologize for my bad english.

clear all

clc

P1 = [1 0 0];

P2 = [2 0 0];

P3 = [2.5 1 0];

P4 = [2 2 0];

P5 = [1 2 0];

P6 = [0.5 1 0];

P7 = [1 0 9];

P8 = [2 0 9];

P9 = [2.5 1 9];

P10 = [2 2 9];

P11 = [1 2 9];

P12 = [0.5 1 9];

P13 = [1.5 1 12];

Hauptobjekt.Ecken= [P1;P2;P3;P4;P5;P6;P7;P8;P9;P10;P11;P12;P13]

P14 = [0.5 1 0];

P15 = [0.5 1 7];

P16 = [-2.5 1 0];

P17 = [0.6 0.8 0];

P18 = [0.6 0.8 7];

Fluegel.Ecken1 = [P14;P15;P16;P17;P18]

F1 = [1 2 8 7 1 1];

F2 = [7 1 6 12 7 7];

F3 = [12 6 5 11 12 12];

F4 = [5 11 10 4 5 5];

F5 = [4 10 9 3 4 4];

F6 = [3 9 8 2 3 3];

F7 = [1 2 3 4 5 6];

F8 = [7 8 9 10 11 12];

F9 = [7 8 13 7 7 7];

F10 = [8 9 13 8 8 8];

F11 = [9 10 13 9 9 9];

F12 = [10 11 13 10 10 10];

F13 = [11 12 13 11 11 11];

Hauptobjekt.Flaechen = [F1;F2;F3;F4;F5;F6;F7;F8;F9;F10;F11;F12;F13]

F14 = [14 16 15];

F15 = [16 15 18];

F16 = [16 14 17];

F17 = [16 17 18];

Fluegel.Flaechen1 = [F14;F15;F16;F17]

plot3(0,0,0)

grid on

patch('Vertices',Hauptobjekt.Ecken,'Faces',Hauptobjekt.Flaechen,'FaceColor','red')

patch('Vertices',Fluegel.Ecken1,'Faces',Fluegel.Flaechen1,'FaceColor','red')

axis equal

a= 15;

axis ([-a a -a a -a a])

[VBBV]

For every face, it requires a pair of vertices. You have 15 faces and only 13 pair ofvertices for first patch (4 vertices less) For second patch you have 12 faces but 13 pairs of vertices ( one extra )

Answer 1

[Walter Roberson]

For the second patch you ask for 5 edges, and you ask for 4 faces. However the face data you pass in uses vertice numbers up to 18, even though there are only 5 vertices for the patch.

When you add a second patch, the new vertices do not get added on to a global list of vertices, and you do not use vertex numbers relative to a global list of vertices. Instead each numbering is relative to that patch() only.

Note: in your situation you only need one patch object. Put in all 18 vertices. Put in all 17 of the faces, using the numbering you have.

The only adjustment you need to make to put everything into one patch() is to pad all of the face lists to the same number of columns. Pad the shorter rows with nan. So you would have a bunch of faces that have 6 numeric vertices and some that have a smaller number and then several nan.

When you do that, get rid of those duplicate vertices

F1 = [1 2 8 7 nan nan];
F2 = [7 1 6 12 nan nan];

your F9 onwards would have three numeric vertices followed by 3 nan.

[Edislav Dimitrov]

it works thank you