Why is my plot not working with the for loop?
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I am trying to plot multiple helices in one plot but for some reason I am only getting one helix with my code below...
clc;
close all;
n = input('number of turns ');
r = input('radius ');
h = input('length ');
w = input ('number of wires ');
e = (2*pi)/(w/2); %theta (where the wire is starting)
for i=1:1:w/2
t = (i-1)*e:pi/100:(n*2*pi)+(e*(i-1)); %t value for CCW helices
x = r*sin(t);
y = r*cos(t);
z = (h/(n*2*pi))*t;
end
plot3(x,y,z, 'blue') %plot CCW helices
回答（1 个）
KALYAN ACHARJYA
2018-6-13
编辑：KALYAN ACHARJYA
2018-6-13
clc; close all;
n=input('number of turns ');
r=input('radius ');
h=input('length ');
w=input('number of wires ');
e=(2*pi)/(w/2); %theta (where the wire is starting)
for i=1:1:w/2
t =(i-1)*e:pi/100:(n*2*pi)+(e*(i-1)); %t value for CCW helices
x=r*sin(t);
y=r*cos(t);
z=(h/(n*2*pi))*t;
plot3(x,y,z) %plot CCW helices
hold on;
end
hold off;
8 个评论
Julia Morandi
2018-6-13
Guillaume
2018-6-13
Kalyan code is actually plotting floor(w/2) helices and is correct according to your equations.
However, since they have all the same radius and phase and the only thing that change per helix in your original equation is the start and end point of t, they all overlap. If you remove the 'blue' argument to plot3 and let matlab automatically assign different colours to the helices, you'll see how they overlap.
KALYAN ACHARJYA
2018-6-13
Thanks Guilaume
KALYAN ACHARJYA
2018-6-13
number of turns 20
radius 6
length 10
number of wires 10
>>
KALYAN ACHARJYA
2018-6-13
Change for loop length, it will more visible
for i=1:1:w
KALYAN ACHARJYA
2018-6-13
KALYAN ACHARJYA
2018-6-13
e=40;
plot3(x,y,z,'linewidth',2) %plot CCW helices
hold on
Enter
number of turns 3
radius 4
length 20
number of wires 10
Result
KALYAN ACHARJYA
2018-6-13
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