how to plot sine and cosine waves in one graph ?
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Osama Abbas
il 28 Set 2012
Commentato: Walter Roberson
il 7 Apr 2022
used for academic use
5 Commenti
Walter Roberson
il 7 Apr 2022
syms x b
a = randn()
f = cos(a*x + b);
fsurf(f, [-10 10 -2*pi 2*pi])
xlabel('x'); ylabel('b')
Risposta accettata
Wayne King
il 28 Set 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 Commenti
Più risposte (4)
Sabarinathan Vadivelu
il 28 Set 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 Commenti
Walter Roberson
il 1 Feb 2021
subplot 121 is archaic, no longer documented, but still works. It is interpreted as subplot(1, 2, 1)
Abdullah Rajput
il 19 Ago 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 Commenti
Konstantin Kuzminov
il 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 Commenti
Walter Roberson
il 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
il 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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