I am building an iOS app using Rubymotion.
In this app I got a mapview. I can display this fine but I want to set an initial zoom level to the annotation area instead of a fully zoomed out view. How can I do this?

This is my code:

```
map = MKMapView.alloc.initWithFrame(CGRectMake(10, 10, (hash[:width]-20), (hash[:height]-20)))
    map.mapType = MKMapTypeStandard
    map.delegate = self
    map.showsUserLocation = true
    map.setCenterCoordinate(location, animated:true)
    map.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight

```