Labels dont show up

Hello,

Why does only the label for the last curve shows up? How do I get the labels to all show up on the same plot? I am graphing 3 different Euler's approximations and then an exact solution for an ODE on the same plot. Also how do I label the axis ?

f = @(t,y) t*y-y;
y0 = 0.5;


t = 0:0.2:1;
[t,y1] = euler(f,t,y0);
plot(t,y1)
legend('Euler 0.2')

hold on 

t = 0:0.1:1;
[t,y3] = euler(f,t,y0);
plot(t,y3)
legend('Euler 0.1')


t = 0:0.05:1;
[t,y4] = euler(f,t,y0);
plot(t,y4)
legend('Euler 0.05')

[t,y2] = ode45(f,[0 10],y0);
plot(t,y2,'LineWidth',3)
legend('Exact solution')

Answer 1

[Shubham Gupta]

One way to do this :

f = @(t,y) t*y-y;
y0 = 0.5;


t = 0:0.2:1;
[t,y1] = euler(f,t,y0);
plot(t,y1,'DisplayName','Euler 0.2');

hold on

t = 0:0.1:1;
[t,y3] = euler(f,t,y0);
plot(t,y3,'DisplayName','Euler 0.1');

t = 0:0.05:1;
[t,y4] = euler(f,t,y0);
plot(t,y4,'DisplayName','Euler 0.05');

[t,y2] = ode45(f,[0 10],y0);
plot(t,y2,'LineWidth',3,'DisplayName','Exact solution');

legend show

I hope it helps !