Setting the zoom level for a MKMapView

Question

I have a map which shows correctly, the only thing I want to do now is set the zoom level when it loads. Is there a way to do this?

Thanks

Answer 1

Based on quentinadam's answer

Swift 5.1

// size refers to the width/height of your tile images, by default is 256.0
// Seems to get better results using round()
// frame.width is the width of the MKMapView

let zoom = round(log2(360 * Double(frame.width) / size / region.span.longitudeDelta))