June 2011
Intermediate to advanced
590 pages
19h 31m
English
Content preview from iOS Programming: The Big Nerd Ranch Guide, Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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For the More Curious: Filtering and Frequency
In general, there are two ways of altering the accelerometer data to suit your needs: change the frequency of accelerometer data updates and apply a filter to the data. When you’re writing an application that relies on accelerometer data, you should determine the update interval and filtering algorithm that gives the user the best experience.
In terms of update intervals, here are some recommendations:
- Orientation Applications
- If your application relies on the current orientation of the device (for example, to rotate an arrow to point in a certain direction), the accelerometer can update infrequently. A value of 1/20 to 1/10 seconds for the updateInterval is sufficient.
- Game Applications
- An application ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.