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Output is stuck on String
Hi. I have the following code with results in an error message // // ViewController.swift // Accelerometer // // import UIKit import CoreMotion let motion = CMMotionManager() class ViewController: UIViewController { @IBOutlet var xaxis: UILabel! @IBOutlet var yaxis: UILabel! @IBOutlet var zaxis: UILabel! let movementManager = CMMotionManager() override func viewDidLoad() { super.viewDidLoad() movementManager.startAccelerometerUpdates() movementManager.accelerometerUpdateInterval = 0.1 Timer.scheduledTimer(withTimeInterval: 0.1, repeats: true) { _ in if let data = self.movementManager.accelerometerData { // self.xaxis.text = String(data.acceleration.x) //self.yaxis.text = String(data.acceleration.y) //self.zaxis.text = String(data.acceleration.z) var xoutput: () = self.xaxis.text = String(data.acceleration.x) var xoutput = xoutput * 9.81 print(xoutput) } } } } I realize that it is not working since the whole value of "xoutput" has a string in it. Any advice on making it so it will be a Double? THANK YOU!
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Xcode won't execute code?
Hi everyone. I have the following code that I am trying to execute in Xcode. I then install it on my iPhone. It doesn't run at all and I don't know why. Any thoughts? Thank you. import CoreMotion class MyViewController: UIViewController { let motionManager = CMMotionManager() func startAccelerometer() { if motionManager.isAccelerometerAvailable { motionManager.accelerometerUpdateInterval = 0.1 // 10 updates per second motionManager.startAccelerometerUpdates(to: .main) { (data, error) in guard let accelerometerData = data else { return } let x = accelerometerData.acceleration.x let y = accelerometerData.acceleration.y let z = accelerometerData.acceleration.z // Process the x, y, and z acceleration values here print("X: \(x), Y: \(y), Z: \(z)") } } } }
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How can I calculate distance and vertical velocity?
Can't I just add up all of the accelerations of the accelerometer and then use this physics equation to get distance? d = v(i) x t + (1/2) x a x t ^2 In this: v(i) would be 0 t = 1 second a = all accelerometer speeds added together for.1 second t = 1 second Can't I just use this equation to get vertical velocity? A lot of people have said it is impossible but It has been done with variometer apps. I can’t figure out the code. Can anyone guide me in the right direction? v(f) = v(i) + a x t v(i) = 0 a = y-axis acceleration for 1 second t = 1 second Please let me know if this is possible. Thank you so much for your help.
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