How to delete specified curved in a figure using a handle?

How to delete specified curved in a figure using a handle?

t = 0：0.1：2*pi;
y = sin(t);
plot(t,y)

Then how to delete the 'sin(t)'curve?

Answer 1

[Walter Roberson]

t = 0：0.1：2*pi;
y = sin(t);
h = plot(t,y);

then

delete(h)

Answer 2

[Azzi Abdelmalek]

cla(gca)

% or if you have two plots in the same figure

t = 0:0.1:2*pi; 
y = sin(t);
y1=cos(t);
h1=plot(t,y);
hold on;
h2=plot(t,y1,'r')

% to remove plot 1:

set(h1,'visible','off')