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SwiftUI List performance

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Using the Accellerate Framework for Data Smoothing...?
Hello,Does anyone have any pointers to using the Accelerate Framework for Data Smoothing...? I am looking to smooth data based on inputs to the accelerometers. I currently do some basic filtering of incoming accelerometer data points and then pass the data to a function that then performs some calculations based on this. I then would like to do some further data smoothing on the processed data.I currently have a prototype that uses a Python library that performs a Savitzky-Golay filter on the resulting data. I then use the output from that in my App. My prototype calculates data nicely, however I want to do this in either Objective-C / Swift. I would also like to use the Accelerate Framework for performance reasons. So far I haven't seen any pointers to how I could use the Accelerate Framework for data smoothing, hence my question.If any one has any pointers or documentation, then please let me know.Thanks,JoelPS : Not sure which Space this belongs to. Please move if I got it wrong.
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Jun ’15
Reply to First install impressions?
Installation slow, but no issues.General impression: Massively improved performance on a late 2013 MBA. Fans were spinning often on Yosemite before, now system is cool (literally). Also, it behaves a lot faster. So that's good and it really makes me not want to go back.Some observations in random order:Eliminated custom content from /usr, which broke LaTeX. Needed disabling rootless to restore.Java problems were avoided by switching to Java8 before.VirtualBox works w/o problems.Skim is broken. Which is a big one for all students probably :-(Magic Trackpad behaves weirdly (operational, except mouse cursor not moving) when connecting MBA to TB display. Using insomnia to not have it sleep when connecting solves it.TB connected audio device (through belkin hub) stopped working, after a reboot it was there againFefe's blog shows white boxes when pinch-zooming in SafariThe announced new tiling features are at odds with my being too stupid to make them work in any way.TotalSpaces 2 could be made work with a
Topic: App & System Services SubTopic: Core OS Tags:
Jun ’15
Reply to Touch ID credential surviving device reset on iOS 8.3
From the relese notes, it is a known issue:Keychain items created withkSecAccessControlUserPresence access control list are using global Touch ID credential for 10 minutes. When an iPhone is unlocked by Touch ID, these items reuse the Touch ID unlock information and do not ask for new authentication. When the iPhone is unlocked using a passcode, the items require Touch ID.
Topic: Privacy & Security SubTopic: General Tags:
Jun ’15
App update not showing in App Store updates on device
When I have a new version of my app released by Apple it doesn't seem to appear as an update on any device that has downloaded it. My app makes use of Core Data and to delete the app and download the latest version would mean a great deal of data would be lost. I have a number of questions related to this problem:1 - Is there is something that I have not done in the development of the app which makes the update appear or should it automatically appear once released2 - Is there a way of forcing the update to appear in the Update list after it has been released?3 - Is there a way of updating the app without using the App Store updates?4 - Out of interest if the target device is iOS8 or higher and the user's device is only on iOS7 would an update be hidden from the update list?Many thanks
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Jun ’15
Reply to Submit App to AppsTore - Xcode Crash
This is the crash report :Process: Xcode [570]Path: /Applications/Xcode.app/Contents/MacOS/XcodeIdentifier: com.apple.dt.XcodeVersion: 6.3.2 (7718)Build Info: IDEFrameworks-7718000000000000~2App Item ID: 497799835App External ID: 812404257Code Type: X86-64 (Native)Parent Process: ??? [1]Responsible: Xcode [570]User ID: 501Date/Time: 2015-06-17 13:55:50.417 -0500OS Version: Mac OS X 10.10.3 (14D136)Report Version: 11Anonymous UUID: 62FC1C66-70DA-161C-D548-575494D67226Time Awake Since Boot: 710 secondsCrashed Thread: 17 Dispatch queue: NSOperationQueue 0x7f808b240380 :: NSOperation 0x7f808b13c930 (QOS: USER_INITIATED)Exception Type: EXC_CRASH (SIGABRT)Exception Codes: 0x0000000000000000, 0x0000000000000000Application Specific Information:ProductBuildVersion: 6D2105ASSERTION FAILURE in /SourceCache/IDEFrameworks/IDEFrameworks-7718/IDEFoundation/Issues/IDEIssueManager.m:457Details: This method must only be called on the main threadObject: <IDEIssueManager>Method: +_issueProviderInfoThread: <NSThread: 0x7
Jun ’15
Reply to How long does "processing" usually take?
Between 3 minutes and forever (I had builds staying there for days).Reloading the page doesn't do anything, and pushing additional builds just queue them.Sometimes the build gets out of processing state, sometimes, it stays stuck forever.What worked for me (but not everytime, so it may have been a coincidence) was to use the Application Loader in those cases. The new uploaded build went out of the processing queue to the build section, and the other builds just dispeared (so I have missing build numbers in the build list).edit: precision about the workaround
Jun ’15
Reply to How to insure lazy var instantiated in init()?
Try as I might with using let, there is no way I can get this to compile otherwise. Note the self and self.queue in the parameter list. My understanding in Swift 1.x, that you could use a closure to do this in conjunction with lazy var - I saw this earlier and have used it with great success in other code. It's just that in this case there is no method I can call that isn't just silly or obviously something that cannot have any affect (like calling stopAdvertising().If I don't get it, I'm all ears on how to properly construct this object.
Topic: Programming Languages SubTopic: Swift Tags:
Jun ’15
CoreMediaIO sample camera driver
Hello,We have been successful at creating a CoreMediaIO plug-in sample camera driver using the example at https://developer.apple.com/library/mac/samplecode/CoreMediaIO/Introduction/Intro.html.These are steps we do during installation:the built plugin is copied into /Library/CoreMediaIO/Plug-Ins/DAL/sample.plugin and the kernel extension is placed into /Library/Extensions/sample.kext.We do the following:chown -R root:wheel /Library/Extensions/sample.kextchown -R root:wheel /Library/CoreMediaIO/Plug-Ins/DAL/sample.pluginkextload /Library/Extensions/sample.kextcreate a LaunchDaemon loads the plugin.The installation works and the camera is installed.An application like AVRecorder or FaceTime is able to detect our camera driver if its opened AFTER the installation of the camera driver. However, if the application is already opened and then the camera is installed, the list of devices does not refresh and the application does not detect our camera driver. The only way it will detect is if we close the app
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Jun ’15
Reply to Latest Office 2016 Apps hang on open
There are many problems with this update too nymerous to list. I'll start it off and others can chime in.1. Dysfunctional select of text in Word.2. Improper display of unicode characters accross all apps.3. Outlook's display of Mailboxes does not diplay the Names of the folders. If you know they are there, you can click on them, but you can't seee the names....First Microsoft, then Adobe!Thank you H1B!!!!
Topic: App & System Services SubTopic: Core OS Tags:
Jun ’15
Reply to ms word - black copy/paste
I think your only recourse is to restore a backup if you have one. Due to the nature of these apps being installed from the cloud, you only get the latest (preview) release.There are many problems with this update too numerous to list. I'll start it off and others can chime in.1. Dysfunctional select of text in Word.2. Improper display of unicode characters accross all apps.3. Outlook's display of Mailboxes does not diplay the Names of the folders. If you know they are there, you can click on them, but you can't seee the names....First Microsoft, then Adobe!
Jun ’15