Marker strangely lying above the sky when first start about android-augment-reality-framework HOT 8 OPEN

same issue i have faced , i guess it take a wrong value of altitude . 

I'd check the altitude of your device versus the altitude of the Markers. When 
the markers altitude gets very high/low it could make something like that 
happen. Sometimes it's better to just zero out the altitude unless you are 
interested in things like mountain peaks, etc.

[deleted comment]

Similar issue here: The markers are only displayed from the horizon upwards, 
even though all heights are zeroed. 
Also, when "zooming in" (selecting a smaller radius), the markers are dragged 
to the left of the view until they disappear. With a radius <1km, the markers 
just bounce around.

If it's of any help, I think the issue is within the Marker.updateRadar() 
method, which asserts the marker not to be on the radar even though it is. I 
guess it has something to do with the vector calculation behind it.

This part seems to fail:
if ((locationArray[2] <= -1f) && (x*x+y*y)<(Radar.RADIUS*Radar.RADIUS)) {
            isOnRadar = true;
}

I've made a commit today trying to fix this, let me know if it helps. revision 
143