Time machine not recognizing sparsebundle

Question

I have the following code to work out the MKCoordinateRegion to display the map including two defined points. The problem is it doesn't work when the longitude goes over 180 or -180 degrees.

CLLocationCoordinate2D tempPoint1 = CLLocationCoordinate2DMake(startLat,startLong);
CLLocationCoordinate2D tempPoint2 = CLLocationCoordinate2DMake(nextLat,nextLong);

if (lineType == 1) {
    [self createGreatCircleMKPolylineFromPoint: tempPoint1 toPoint: tempPoint2 forMapView:mapView];
}
else  {
    CLLocationCoordinate2D *coords = malloc(sizeof(CLLocationCoordinate2D) * 2);
    coords[0] = tempPoint1;
    coords[1] = tempPoint2;

    MKPolyline *polyline = [MKPolyline polylineWithCoordinates:coords count:2];
    free(coords);
    [mapView addOverlay:polyline];

}

double lon1 = tempPoint1.longitude * M_PI / 180;
double lon2 = tempPoint2.longitude * M_PI / 180;

double lat1 = tempPoint1.latitude * M_PI / 180;
double lat2 = tempPoint2.latitude * M_PI / 180;

double dLon = lon2 - lon1;

double x = cos(lat2) * cos(dLon);
double y = cos(lat2) * sin(dLon);

double lat3 = atan2( sin(lat1) + sin(lat2), sqrt((cos(lat1) + x) * (cos(lat1) + x) + y * y) );
double lon3 = lon1 + atan2(y, cos(lat1) + x);

CLLocationCoordinate2D center;

center.latitude  = lat3 * 180 / M_PI;
center.longitude = lon3 * 180 / M_PI;


MKCoordinateSpan locationSpan;
locationSpan.latitudeDelta = fabs(tempPoint1.latitude - tempPoint2.latitude) * 1.2;
locationSpan.longitudeDelta = fabs(tempPoint1.longitude - tempPoint2.longitude) * 1.2;
MKCoordinateRegion region = {center, locationSpan};

[mapView setRegion:region];

Any ideas how I could alter this code to make sure it can handle the startLong being positive i.e. 174 and the nextLong being negative i.e. -127, and vice versa

Solution

Time Machine backups are a nightmare on NAS, however this is what I did with a NetGear Stora:

In Finder -> Go -> Connect to server.

enter your NAS address including username and password, like this:

smb://username:[email protected]/ *or whatever your volume's IP is.*

then select to mount the volume of where you want to keep your sparse bundle image.

Now open the disk utility, and create a sparse bundle with the following settings:

• Name: Backup (or whatever)
• Size: 300GB (or whatever)
• Format: Mac OS Extended (Journaled)
• Encryption: none
• Partition: No partition map
• Image Format: sparse bundle disk image
• Save As: yourcomputername.sparsebundle (e.g.: Toms-MacBook-Pro.sparsebundle)

After you've done all that copy it to your backup volume and open Time Machine's preferences

Click on Select Disk and choose the volume that you want to backup to.

======

A couple of suggestions:

1. Follow this screencast that i made to auto mount your volume on start up http://www.youtube.com/watch?v=2vhcmEd0Y8o

2. Do not upgrade to OSX Lion when it comes out, since at least for my Netgear's Stora the Time Machine did not work and i ended up buying a Time Capsule, check first on the ReadyNAS forums.

Comments

[HikeMike]

It's unsupported by Apple and Snow Leopard didn't exist when that tutorial was written. Why do you expect it to still work after a major upgrade of the OS?

[Scott]

That used to be the case, but now (at a guess, since Snow Leopard) MachineName.sparsebundle is correct.

[Dominic]

But they are not from 0 to 360 degrees. They are from -180 to 180

[Nicolas Buquet]

It's the same modulo 360. Substract 180 at the end and you will have values between -180 and 180.