How to Add an Alphanumeric Character to a Shape?

How can I add the number “1” in the middle of the circle below?

r = rectangle('Position', [2 3 5 5], 'Curvature', 1, 'FaceColor', 'g'); axis equal;

Answer 1

[Stephen23]

Use text:

>> pos = [2,3,5,5];
>> r = rectangle('Position',pos, 'Curvature',1, 'FaceColor','g'); axis equal;
>> text(pos(1)+pos(3)/2,pos(2)+pos(4)/2, '1', 'FontSize',24,...
  'HorizontalAlignment','center','VerticalAlignment','middle')