Join Steven Lipton for an in-depth discussion in this video Measurement units, part of Advanced iOS App Development: Core Motion.
- [Instructor] There's a lot of different…units of measurements with core motion,…many of them from physics and math.…You probably haven't had a physics or math class in awhile,…so you might want a refresher.…Put an iPhone on a table with the screen facing up,…and the bottom facing you, like this.…There are three axes going through your phone…based on this position.…The X-Axis goes through one side of the phone to the other.…Side to side motion is measured on the X-Axis.…IPhone measurements are in meters…based on a center reference position.…
The values increase as you go right…and decrease as you go left.…When you move the phone 10 centimeters to the left,…that would be a movement of negative zero point one meters.…The Y-Axis is a motion from the top…to the bottom of the phone.…The values on the Y-Axis increase as you go away from you…and decrease as they get closer to you.…Moving the phone a foot away from you…is about a zero point three meter change in the Y-Axis.…
The Z-Axis is the up and down movement.…The values of the Z-Axis position increases going up…
- Reading Core Motion data
- Understanding Core Motion methods
- Creating a pedometer app
- Using pace and distance data from Core Motion
- Pushing and pulling device motion data
- Accessing the altitude sensors
- Working with the motion activity manager (CMMotionActivityManager)
Skill Level Advanced
iOS App Development: Accessibilitywith Kevin Favro2h 34m Intermediate
Advanced iOS Development: Working with APIswith Saul Mora1h 59m Intermediate
1. Core Motion Introduction
3. Device Motion
5. Recorded Data
Next steps1m 43s
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