¡@

Home 

2014/10/15 ¤U¤È 10:05:38

iphone Programming Glossary: correlation

Detecting noise via mic while playing a song on iPhone

http://stackoverflow.com/questions/11993844/detecting-noise-via-mic-while-playing-a-song-on-iphone

the amount of recorded data low . Then when the track was played again I would basically calculate per timestep the correlation coefficient between the output graphs that are constructed using the live playback fft data and the recorded fft data so.. recorded fft data so the 'squiggly' lines that you see when you put the app in fft mode . This 'sort of' works. The correlation coefficient is clearly lower when excess sound noise is in the room but it isn't very sensitive and also depends on the..

Bluetooth LE RSSI for proximity detection iOS

http://stackoverflow.com/questions/15687332/bluetooth-le-rssi-for-proximity-detection-ios

too strong for this it is also too inconsistent to have an accurate stab at the proximity as it doesn't show very much correlation to the devices proximity. I have tried the Apple sample code and that is similar in that the devices don't have to be close..

Core Data backed UITableView with indexing

http://stackoverflow.com/questions/1599204/core-data-backed-uitableview-with-indexing

controllerDidChangeContent NSFetchedResultsController controller Because the index paths it's returning me have no correlation with the ones in core data. I got add working by simply rebuilding my index NSArray and NSDictionary when the user adds..

instruments with iOS: Why does Memory Monitor disagree with Allocations?

http://stackoverflow.com/questions/5518918/instruments-with-ios-why-does-memory-monitor-disagree-with-allocations

is only using 7.55 MBs of memory while Memory Monitor says 53.30. Further more the free system memory has little to no correlation to the amount of memory that the app is using. Does anyone know why there is such a big disagreement between these two tools..

iPhone, how to detect orientation of image when it was taken

http://stackoverflow.com/questions/5928257/iphone-how-to-detect-orientation-of-image-when-it-was-taken

the info dictionary info objectForKey @ Orientation Note This will not relate to UIImageOrientation directly the correlation is as follows. UIImageOrientation orientationFromEXIF int exif UIImageOrientation newOrientation switch exif case 1 newOrientation..

Moving a Stick figure, anchorpoints, animation, or something else…?

http://stackoverflow.com/questions/7808981/moving-a-stick-figure-anchorpoints-animation-or-something-else

of the sprite image. If you modify the anchorPoint arbitrarily for every node in the game you no longer have any correlation between the visual representation of a node and its position. Thus it is bad design to modify the anchorPoint for gameplay..

UITextField causes crash in iOS 5, works fine in iOS 4

http://stackoverflow.com/questions/8145491/uitextfield-causes-crash-in-ios-5-works-fine-in-ios-4

for my debug dev version of the application which seemed to work fine on iOS 4.3 but not on iOS 5. It is an impossible correlation to figure out that tapping on a random UITextField not all caused this for example if I changed the UITextField to secure..