ı want to change gazebo first starting view pose on my model. When gazebo first started, ı want to see my world above.I dont want always change my world view with mouse.

so :

my first view: http://i.imgur.com/qTkYEJc.png

BUT: I want to see like this first starting.

http://i.imgur.com/ouqEYEi.png

what can ı do in my sdf file ?