gistfile1.m

	MKCoordinateRegion region;
	if ([locations count] > 0) {
		CLLocation *firstLoc = [locations objectAtIndex:0];
		CLLocationCoordinate2D southWest = firstCoord.coordinate;
		CLLocationCoordinate2D northEast = southWest;
		
		for (CLLocation* loc in founds) {
			southWest.latitude = MIN(southWest.latitude, loc.coordinate.latitude);
			southWest.longitude = MIN(southWest.longitude, loc.coordinate.longitude);
			
			northEast.latitude = MAX(northEast.latitude, loc.coordinate.latitude);
			northEast.longitude = MAX(northEast.longitude, loc.coordinate.longitude);
		}	
		CLLocation *locSouthWest = [[CLLocation alloc] initWithLatitude:southWest.latitude longitude:southWest.longitude];
		CLLocation *locNorthEast = [[CLLocation alloc] initWithLatitude:northEast.latitude longitude:northEast.longitude];
		
		// This is a diag distance (if you wanted tighter you could do NE-NW or NE-SE)
		CLLocationDistance meters = [locSouthWest getDistanceFrom:locNorthEast];
		
		region.center.latitude = (southWest.latitude + northEast.latitude) / 2.0;
		region.center.longitude = (southWest.longitude + northEast.longitude) / 2.0;
		region.span.latitudeDelta = meters / 111319.5;
		region.span.longitudeDelta = 0.0;
		
		[locSouthWest release];
		[locNorthEast release];
	} else {
		
		region.center.latitude = DEFAULT_LAT;
		region.center.longitude = DEFAULT_LONG;
		region.span.latitudeDelta = 0.1;
		region.span.longitudeDelta = 0.1;
	}
	self.mapView.region = [self.mapView regionThatFits:region];