How can I create a circle in the middle of the figure which do not touch axis..??

I am trying to simulate following code..

x=2;
y=2;
r=3;
ang=0:0.01:2*pi; 
xp=r*cos(ang);
yp=r*sin(ang);
plot(x+xp,y+yp);

but in this code circle toch the edges..i want a circle which is in middle..how can i do it

Answer 1

[Star Strider]

This works:

x=2;
y=2;
r=3;
ang=0:0.01:2*pi; 
xp=r*cos(ang);
yp=r*sin(ang);
plot(x+xp,y+yp);
axis([min(x+xp)-1  max(x+xp)+1    min(y+yp)-1  max(y+yp)+1])
axis square

You can use the axis function to set the limits and other properties of your figure axis.

Answer 2

[Chad Greene]

Follow it with this:

axis([-2 6 -2 6])
axis equal

The first line sets limits of the axes, the second line ensures that the circle isn't squashed.

Answer 3

[David Young]

Try adding

margin = 2;    % how much space to leave
axis([x x y y] + [-1 1 -1 1]*(r+margin));