how can i plot multiple circles in a plot

i tried using the code below but they all draw ellipse i want perfect circle not ellipse type

if true
  s=[7,7];
d=[0,-4];
c=[5,5];
ox = -10 + (20)*rand(10,1);
oy = -10 + (20)*rand(10,1);
hold on
for l=1:length(ox)
   viscircles( [ox(l), oy(l)], 1,'LineStyle','-','LineWidth',1);
end

end

Answer 1

[Anton Semechko]

After you finished plotting, use command

axis equal

to make aspect ratios of vertical and horizontal axes equal to one another.

So your code would be

s=[7,7];
d=[0,-4];
c=[5,5];
ox = -10 + (20)*rand(10,1);
oy = -10 + (20)*rand(10,1);
hold on
for l=1:length(ox)
 viscircles( [ox(l), oy(l)], 1,'LineStyle','-','LineWidth',1);
end
axis equal