LinearMatrix3 band2xyz = new LinearMatrix3(
a[0][0], a[0][1], a[0][2],
a[1][0], a[1][1], a[1][2],
a[2][0], a[2][1], a[2][2]);
double factor = 1.0 / band2xyz.times(new Vector3(1, 1, 1)).y();
return band2xyz.times(LinearMatrix3.scaleMatrix(factor)).inverse();
}
/* (non-Javadoc)