Unrecognized method, property, or field 'vertices' for class 'triangulation'.

I am trying to create a virtual robot and can not get this code to run without getting a error.

clc

clear all

dtr = pi/180;

base =stlread('base.stl');

arm=stlread('arm.stl');

head=stlread('head.stl');

finger=stlread('finger.stl');

patch(base, 'EdgeColor', 'None','FaceColor','r');

patch(arm, 'EdgeColor', 'None','FaceColor', 'b');

patch(head, 'EdgeColor', 'None','FaceColor', 'g');

patch(finger, 'EdgeColor', 'None','FaceColor', 'y');

xlabel('x');

ylabel('y');

zlabel('z');

%Make base larger

for ind=1:length(base.vertices(:,1))

base.vertices(ind,:)=(1150*eye(3)*base.vertices(ind,:)')';

end

%Move the base in the y direction

R=[1 0 0;0 1 0;0 0 1]';d=[0;75;0];

for ind =1:length(base.vertices(:,1))

base.vertices(ind,:) = (R*base.vertices(ind,:)'+d)';

end

%move arm in x and z direction

R=[1 0 0; 0 1 0 ; 0 0 1]';d=[-75;0;0.03];

for ind =1:length(arm.vertices(:,1))

arm.vertices(ind,:) = (R*arm.vertices(ind,:)'+d)';

end

%change head x direction and move 100.03 on z and 300 on x

R=[1 0 0; 0 1 0; 0 0 -1]';d=[250;0;265];

for ind = 1:length(head.vertices(:,1))

head.vertices(ind,:) = (R*head.vertices(ind,:)'+d)';

end

%moving finger

R=[1 0 0; 0 1 0; 0 0 -1]'; d=[520;-171;400];

for ind = 1:length(finger.vertices(:,1))

finger.vertices(ind,:) = (R*finger.vertices(ind,:)'+d)';

end

baseo=base; armo=arm; heado=head; fingero=finger;

patch(baseo, 'EdgeColor', 'None','FaceColor','r');

patch(armo, 'EdgeColor', 'None','FaceColor', 'b');

patch(heado, 'EdgeColor', 'None','FaceColor', 'g');

patch(fingero, 'EdgeColor', 'None','FaceColor', 'y');

axis equal

view(3)

xlabel('x');

ylabel('y');

zlabel('z');

pause

When trying to run this code I keep receiving the error

Unrecognized method, property, or field 'vertices'

for class 'triangulation'.

Error in robot (line 26)

for ind =1:length(base.vertices(:,1))

Answer 1

[Steven Lord]

The stlread function's documentation page states it returns a triangulation object. The documentation page for triangulation indicates that this object does not have a vertices property so the error message is correct. You likely want to work with the Points property of the triangulation objects.