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POWhy isn't my MKMapView zooming out as much as it should?
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  1. POWhy isn't my MKMapView zooming out as much as it should?
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    copied!<p>I generally have no problem placing annotations on my <code>MKMapView</code>. I have pins for various locations and the code automatically centers and sets the span based on the max and min values. However, I am noticing that when I add more and more points, there is a certain amount my map will zoom out to see, and I lose what is on the edges. Here are some pics:</p> <p>This is how it looks when I first load the MKMapView:</p> <p><a href="http://www.grapekeeper.com/tempcrap/start.png" rel="nofollow noreferrer">http://www.grapekeeper.com/tempcrap/start.png</a></p> <p>When I pan I can see more pins that are lost on that original view:</p> <p><a href="http://www.grapekeeper.com/tempcrap/start-move.png" rel="nofollow noreferrer">http://www.grapekeeper.com/tempcrap/start-move.png</a> <a href="http://www.grapekeeper.com/tempcrap/start-pan.png" rel="nofollow noreferrer">http://www.grapekeeper.com/tempcrap/start-pan.png</a></p> <p>And when I pinch in the simulator this is as zoomed out as it goes:</p> <p><a href="http://www.grapekeeper.com/tempcrap/pinch-zoom-out.png" rel="nofollow noreferrer">http://www.grapekeeper.com/tempcrap/pinch-zoom-out.png</a></p> <p>Here's my code for reference:</p> <pre><code>double min = [[allLatitudes valueForKeyPath:@"@min.self"] doubleValue]; double max = [[allLatitudes valueForKeyPath:@"@max.self"] doubleValue]; double latSpan = max-min; double minL = [[allLongitudes valueForKeyPath:@"@min.self"] doubleValue]; double maxL = [[allLongitudes valueForKeyPath:@"@max.self"] doubleValue]; double lonSpan = maxL-minL; double avgLatitude = (max+min)/2; double avgLongitude = (maxL+minL)/2; overallRegion.center.latitude = avgLatitude; overallRegion.center.longitude = avgLongitude; overallRegion.span.latitudeDelta = latSpan; overallRegion.span.longitudeDelta = lonSpan; [self.mapView setRegion:overallRegion animated:YES]; </code></pre>
 

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