Working version of findZoomRegion, alloying you to pass an array of points and find the best region lat/lng for the mapview in Appcelerator Titanium

gistfile1.js

function findZoomRegion(points) {
  	var nbPtToShow = points.length-1;
        var tmpDeltatLat = 0, tmpDeltatLong = 0, maxDeltatLat = 0, maxDeltatLong = 0, centerLat = 0, centerLong = 0;
 
        for(var i = 0; i <= Math.floor(points.length / 2); i++) {
            for(var j = nbPtToShow; j >= Math.floor(points.length / 2); j--) {
                if(j != i) {
                    tmpDeltatLat = Math.abs(Math.abs(points[i].latitude) - Math.abs(points[j].latitude));
                    if(tmpDeltatLat > maxDeltatLat) {
                        maxDeltatLat = tmpDeltatLat;
                        centerLat = Math.min(points[i].latitude, points[j].latitude) + maxDeltatLat / 2;
                    }
                    tmpDeltatLong = Math.abs(Math.abs(points[i].longitude) - Math.abs(points[j].longitude));
                    if(tmpDeltatLong > maxDeltatLong) {
                        maxDeltatLong = tmpDeltatLong;
                        centerLong = Math.min(points[i].longitude, points[j].longitude) + maxDeltatLong / 2;
                    }
                }
            }
        }
        var region = {
            latitude : centerLat,
            longitude : centerLong,
            latitudeDelta : maxDeltatLat,
            longitudeDelta : maxDeltatLong
        };
        return region;
}

Is there any way to get this to go a step outwards? I am finding that the delta isnt enough to actually see the markers on the screen.

@iantearle, multiply your maxDeltaLat/Long by 2 and you'll get the zoom level to default to the next higher level. So...

var region = {
            latitude : centerLat,
            longitude : centerLong,
            latitudeDelta : maxDeltatLat*2,
            longitudeDelta : maxDeltatLong*2
        };

When i apply this code and pass array of points having latitude and longitude with 14 points this throw error:

Cannot read property '0' or undefined. The same js I used in browser works fine.