Add 2d plots along a 3d helix

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Vivi
Vivi on 13 Feb 2020
Commented: Subhadeep Koley on 14 Sep 2020
Hello.
I have a simple helix that I've plotted by using the following code:
r=93.36;
theta=0:pi/50:10*pi;
%Trajectory in x-direction
x=-r.*cos(theta);
%Trajectory in y-direction
y=r.*sin(theta);
%Trajectory in z-direction
z=theta;
figure(1);
plot3(x,y,z);
xlabel('x');
ylabel('y');
zlabel('z');
grid on
My goal now is to also plot on the same graph the x and y components of the helix given from the equations above.
Thank you.

Accepted Answer

Subhadeep Koley
Subhadeep Koley on 13 Feb 2020
Use this
close all; clc;
r=93.36;
theta=0:pi/50:10*pi;
%Trajectory in x-direction
x=-r.*cos(theta);
%Trajectory in y-direction
y=r.*sin(theta);
%Trajectory in z-direction
z=theta;
figure(1);
plot3(x,y,z);
xlabel('x');
ylabel('y');
zlabel('z');
grid on
hold on;
plot(x, y, 'r', 'LineWidth', 3);
  5 Comments
connor brisebois
connor brisebois on 14 Sep 2020
could you explain te use of colon operators in the definition of theta?
Subhadeep Koley
Subhadeep Koley on 14 Sep 2020
Refer to the below link for a detailed explanation.
https://www.mathworks.com/help/matlab/ref/colon.html#bvhfyce

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