How to plot from a specific point?

Hello, I have a rather simple issue that I can't seem to figure out. I have a vector

Vector=[20;50;0];

Which I'd like to plot from this point

Traslacion=[10;-15;10];

Yet I don't know if there's an option for this. Any help would be appreciated

[Gyan Vaibhav]

As I understand you want to plot a vector between these two points?

[Patricio Flores García]

No, I have a vector from the origin to the point I wish to trace, that being [20; 50 ; 0]

I want to move the origin of the vecotr [10 ; -15 ; 10] and have it respect the original vector's properties

[Sam Chak]

Hi @Patricio Flores García, Can you sketch on a piece of paper, or use your PC or smartphone to edit the image by drawing the desired vector?

Answer 1

[Voss]

Vector=[20;50;0];
Traslacion=[10;-15;10];

XYZ = [Vector,Traslacion];
plot3(XYZ(1,:),XYZ(2,:),XYZ(3,:),'r','LineWidth',3)

box on
grid on
view(-31,35)

[Patricio Flores García]

I'm sorry, I think I wasn't very descriptive in my code. But the main issue is that the vector's properties are not respected doing this. As can be seen when I plot from the origin to the vector's "x", "y" and "z" coordinates.

Vector=[20;50;0];
Traslacion=[10;-15;10];
x_original=[0 Vector(1,1)];
y_original=[0 Vector(2,1)];
z_original=[0 Vector(3,1)];

plot3(x_original,y_original,z_original,'LineWidth',2,'Color','k')
grid on 
hold on 
XYZ = [Vector,Traslacion];
plot3(XYZ(1,:),XYZ(2,:),XYZ(3,:),'r','LineWidth',3)

[Patricio Flores García]

Should I maybe move the axis to the point I want to plot from?

[Voss]

Vector=[20;50;0];
Traslacion=[10;-15;10];

Like this?

figure();
XYZ = Vector+[[0;0;0] Traslacion];
plot3(XYZ(1,:),XYZ(2,:),XYZ(3,:),'r','LineWidth',3)

box on
grid on
view(-31,35)

Or this?

figure();
XYZ = Traslacion+[[0;0;0] Vector];
plot3(XYZ(1,:),XYZ(2,:),XYZ(3,:),'r','LineWidth',3)

box on
grid on
view(-31,35)

Answer 2

[Fangjun Jiang]

Use line(), you need to put the data in the right format. See help document

Vector=[20;50;0];
Traslacion=[10;-15;10];
d=[Traslacion Vector]

d = 3×2

10 20 -15 50 10 0

 line(d(1,:),d(2,:),d(3,:))
 view(3);grid on;

[Patricio Flores García]

Hello, sorry, I think I wasn't descriptive enough in my initial question. The main issue is that the original vector's properties (when tracing from the origin to its endpoint) are not respected when trying to displace it:

Vector=[20;50;0];
x_original=[0 Vector(1,1)];
y_original=[0 Vector(2,1)];
z_original=[0 Vector(3,1)];

Traslacion=[10;-15;10];
plot3(x_original,y_original,z_original,'LineWidth',2,'Color','k')
grid on
hold on
d=[Traslacion Vector]

d = 3×2

10 20 -15 50 10 0

line(d(1,:),d(2,:),d(3,:))

[Fangjun Jiang]

Vector=[20;50;0];
Traslacion=[10;-15;10];
d=[zeros(3,1),Traslacion, Vector];
line(d(1,:),d(2,:),d(3,:))
view(3);grid on;