<How to change magnetic field X,Y,Z value from dev...

# stackoverflow

[user]

How to change magnetic field X,Y,Z value from device to world frame of reference
float[] R = new float[9];
float[] I = new float[9];
SensorManager.getRotationMatrix(R, I, gravity, magnetic);
float [] A_D = values.clone();
float [] A_W = new float[3];
A_W[0] = R[0] * A_D[0] + R[1] * A_D[1] + R[2] * A_D[2];

A_W[1] = R[3] * A_D[0] + R[4] * A_D[1] + R[5] * A_D[2];
A_W[2] = R[6] * A_D[0] + R[7] * A_D[1] + R[8] * A_D[2];