how to plot sine and cosine waves in one graph ?
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Osama Abbas
le 28 Sep 2012
Commenté : Walter Roberson
le 7 Avr 2022
used for academic use
5 commentaires
Walter Roberson
le 7 Avr 2022
syms x b
a = randn()
f = cos(a*x + b);
fsurf(f, [-10 10 -2*pi 2*pi])
xlabel('x'); ylabel('b')
Réponse acceptée
Wayne King
le 28 Sep 2012
It sounds like the OP wants this in one graph (not subplotted)
t = 0:0.01:(2*pi);
x = cos(t);
y = sin(t);
plot(t,x,'k'); hold on;
plot(t,y,'r-.');
axis([0 2*pi -1.5 1.5])
legend('cos(t)','sin(t)','Location','NorthEast')
2 commentaires
Plus de réponses (4)
Sabarinathan Vadivelu
le 28 Sep 2012
a = 10;
t = 0 : 0.01 : 10;
A = a*sin(t);
subplot(121),plot(t,A);
B = a*cos(t);
subplot(122),plot(t,B);
3 commentaires
Walter Roberson
le 1 Fév 2021
subplot 121 is archaic, no longer documented, but still works. It is interpreted as subplot(1, 2, 1)
Abdullah Rajput
le 19 Août 2020
close all; clear all; clc;
t=[0:0.5:180]
x=sind(t);
plot(t,x),hold on
y=cosd(t);
plot(t,y)
legend('Sine wave','Cos wave')
0 commentaires
Konstantin Kuzminov
le 11 Mar 2021
hold on not needed
x=0:0.1:2*pi;
plot(x,sin(x),"b",x,cos(x),"g");
"b" and "g" - color
4 commentaires
Walter Roberson
le 12 Mar 2021
I would not normally have mentioned a backwards compatibility like that now that we are 4 years on, but I suspect this question is getting read by people who are using old versions of MATLAB. (We are getting a rush of people using MATLAB from 2013 and 2015.)
Konstantin Kuzminov
le 13 Mar 2021
You are absolutely right. This is very useful information, because not everyone has the latest versions, they are not required for simple tasks. Correct syntax - 50% success.
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