- From: Steve Block <steveblock@google.com>
- Date: Fri, 3 Sep 2010 11:44:23 +0100
- To: Dean Jackson <dino@apple.com>
- Cc: "Nilsson, Claes1" <Claes1.Nilsson@sonyericsson.com>, "public-geolocation@w3.org" <public-geolocation@w3.org>
> On both interfaces? Yes, I think so > I wonder if a simple "calibrated" property is better? Using "needs" in the name implies that the user > might have to do something (which they probably do, but the property is exposing the status of > calibration). Good point, I agree. Would isMagnetometerCalibrated or isCompassCalibrated be more clear, or do we want to leave it open to the possibility of other sensors also needing calibration? > Regarding the example "A device in free-fall, with the screen horizontal and upmost, has an > accelerationIncludingGravity of zero and the following value for acceleration:" > > I believe an accelerometer will not be able to tell the direction of gravity in this situation. Right, but a device with a gyroscope too, which is required to eliminate the effects of gravity from the accelerometer measurements, will be able to, I think - at least in the short-term while integration errors are small. -- Google UK Limited Registered Office: Belgrave House, 76 Buckingham Palace Road, London SW1W 9TQ Registered in England Number: 3977902
Received on Friday, 3 September 2010 10:44:52 UTC