How to plot sine graph by using for loop?
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Xing Xing
il 5 Giu 2019
Commentato: AZEEM IMTIAZ
il 4 Ago 2019
I tried to use a for loop to plot a sine graph. The values are generated but then when I try to graph them, I get either an error or no graph. Here's my code:
for i = 0:0.1:2*pi
m=sin(i);
n=i;
plot(n,m,'-r');
hold on
end
2 Commenti
Risposta accettata
Alex Mcaulley
il 5 Giu 2019
You don't need a loop, just:
theta = 0:0.1:2*pi;
plot(theta,sin(theta))
6 Commenti
AZEEM IMTIAZ
il 4 Ago 2019
you need to define t as a continuous variable in the first line then apply for loop on the frequency as discrete values. so that each frequency point will sweep over the time that you have defined in the first line. hope this helps!
t=0:0.04:5;
hold on
for f=[0.7 1 1.5 2]
y=cos(2*pi*f*t);
plot(t,y)
end
Più risposte (1)
Mohammad Alhashash
il 5 Giu 2019
maybe that is what you need.
t= 0:0.01:2*pi;
m =sin(t);
t_plot = NaN(1,length(t));
m_plot = NaN(1,length(m));
u = 1;
for i = 1:length(t)
cla
t_plot(i) = t(u);
m_plot(i) = m(u);
plot(t_plot,m_plot)
drawnow
u = u + 1;
end
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