Hey all, I'm bringing this one back up :)
https://issues.apache.org/jira/browse/CB-152 I am leaning towards going with the spec Jesse linked to [1] and having all the platforms roll with units expressed as m/s^2. >From a conversation I just had with Jesse this issue just came up in WP7 as well. I will do some testing on my iPod + android and see what the different return values are currently. I'll try to consolidate. We will have to update docs for this as well! [1] http://dev.w3.org/geo/api/spec-source-orientation.html#devicemotion On 2/8/12 3:54 PM, "Brian LeRoux" <[email protected]> wrote: >rather than a vote thread I'm thinking we continue to treat W3C >recommendation 'the right way' to do stuff > >(I realize that in itself is debatable!!!) > >On Tue, Feb 7, 2012 at 7:48 AM, Simon MacDonald ><[email protected]> wrote: >> It seems to be on Android that it is returning the value in m/s*s. When >>my >> device is resting on the desk the x and y values are close to 0 while >>the z >> is close to 9.8. Depending on what Android device you have your >> accelerometer may be more accurate or able to go up to a higher level >>of g. >> So, it looks like if we want to standardize on g as the unit to be >>returned >> for the accelerometer I'll need to divide by 9.81. >> >> Also, can someone else run the MobileSpec code and go into Accelerometer >> and do a Start Watch while leaving your phone flat on the desk? I want >>to >> make sure that other devices don't correct for gravity as I only have >> Samsung devices here. >> >> Simon Mac Donald >> http://hi.im/simonmacdonald >> >> >> On Tue, Feb 7, 2012 at 3:36 AM, Filip Maj <[email protected]> wrote: >> >>> Let's decide, please. A vote thread? >>> >>> My vote is using what the W3C spec [1] suggests, which, as Jesse points >>> out in the JIRA issue, seems to be m/s^2. >>> >>> My problem looking at this a few weeks ago was figuring out what the >>> reference point/units on the various native platforms was (I.e. What is >>> -10 / +10 on Android? What is -1000 / +1000 on Blackberry? What are >>>those >>> units?). It's not very well documented :s >>> >>> On 12-02-07 3:00 AM, "[email protected]" <[email protected]> wrote: >>> >>> >Also to note that I think the values on BlackBerry are -1000 to +1000. >>> > >>> >Dan was noticing this last week while working on an app >>> >------Original Message------ >>> >From: Shazron >>> >To: [email protected] >>> >ReplyTo: [email protected] >>> >Subject: Normalization of acceleration values >>> >Sent: Feb 6, 2012 8:57 PM >>> > >>> >https://issues.apache.org/jira/browse/CB-152 >>> > >>> >Should we decide? >>> > >>> >Sent on the TELUS Mobility network with BlackBerry >>> >>>
