How to stop plotting after function hits first zero in oscillatory system?

Hello everyone,

I am making a Haversine function, and am wanting the function to stop plotting values after the first zero is hit; this zero occures at haversine50(101). I tried making a for loop, however, it did not do anything. If you can help me resolve this issue by making my plot do one cycle and then be zero for the rest of the time values, it will be greatly appreciated, thank you.

-Robert

CODE:

clc,clear,close all
dt = 1e-4;
time = 0:dt:12e-3;

hz = [50 500 1000];
haversine50 = (0.5)*(1-cosd(hz(1)*2*360*time));

zero = find(haversine50 == 0);

endtime50 = haversine50(zero(2));

for i=1:numel(time)
    if haversine50(i) >= endtime50
        haversine50(i) = (0.5)*(1-cosd(hz(1)*2*360*time(i)));
    elseif (haversine50(i) < endtime50)
        haversine50(i) = 0;
    end
end
        

figure(1)
plot(time,haversine50); title('Response'); xlabel('Time, measured in sec'); ylabel('Acceleration, measured in m/s^2')

Answer 1

[Alex Mcaulley]

clc,clear,close all
dt = 1e-4;
time = 0:dt:12e-3;
hz = [50 500 1000];
haversine50 = (0.5)*(1-cosd(hz(1)*2*360*time));
zero = find(haversine50 == 0);
haversine50(zero(2)+1:end) = 0;
        
figure(1)
plot(time,haversine50); title('Response'); xlabel('Time, measured in sec'); ylabel('Acceleration, measured in m/s^2')

[Robert Flores]

Thank you, it works beautifully!

-Robert