THANK YOU! I could NOT find any info on this anywhere! You have just made me very happy!
On Dec 13, 7:08 am, Peli <[email protected]> wrote: > You need basic trigonometry:http://en.wikipedia.org/wiki/Trigonometry > > if x and y denote the magnetic field strength in microtesla, then you > get the angle through the arc tangent function: > phi = Math.atan(y/x); > or phi = Math.atan2(y,x); > phi is then the angle in radians. Note that you may want to convert > phi from radians to degree (using phideg = Math.toDegree(phi);) > > Note that this only works if your phone lies flat on the desk. In > arbitrary orientation, you need more sophisticated conversion that > includes x, y, and z and the accelerometer values. > > Peliwww.openintents.orghttp://www.openintents.org/en/node/6 > > On 13 Dez., 03:32, Jeffrey <[email protected]> wrote: > > > > > Okay, so I got a little further, I'm now stuck at the point where I > > can pull values, but they are the micro-tesla measurements. How do I > > get degrees from this? > > > On Dec 12, 8:13 pm, Jeffrey <[email protected]> wrote: > > > > I'm working on an application that will randomly point an arrow in a > > > direction, and have that arrow maintain it's direction if the device > > > is moved. All I want to do it get the magnetic field readings as > > > degrees and I can do it from there. The problem I'm having is getting > > > the magnetic field readings. I can't find any tutorials on it and the > > > API demo on google's dev site uses deprecated code (figures, google's > > > sample code is never n00b friendly). > > > > At this point I've got this together but I don't know what I'm > > > missing, all the examples I can find are using SensorListener which > > > has onSensorChanged(int sensor, float[] values) but > > > SensorEventListener does not support "float[] values" > > > > What am I missing here? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
