GPS Command Example 23:

/gps/particle alpha
/gps/pos/type Plane
/gps/pos/shape Square
/gps/pos/centre 1. 2. 1. cm
/gps/pos/halfx 2. cm
/gps/pos/halfy 2. cm
/gps/ang/type user
/gps/hist/type theta
/gps/hist/point 0. 0.
/gps/hist/point 1. 1.
/gps/hist/point 2. 5.
/gps/hist/point 2.5 1.
/gps/hist/type phi
/gps/hist/point 0. 0.
/gps/hist/point 1. 0.1
/gps/hist/point 3. 4.
/gps/hist/point 5. 6.
/gps/hist/point 6.25 1.
/gps/ene/type Epn
/gps/hist/type epn
/gps/hist/point 0.0 0.
/gps/hist/point 1.0 5.
/gps/hist/point 2.0 2.
/gps/hist/point 3.0 1.
/gps/hist/point 4.0 1.
/gps/hist/point 5.0 4.
/gps/hist/point 6.0 5.
/gps/hist/point 7.0 5.
/gps/hist/point 8.0 1.
/gps/hist/point 9.0 1.
/gps/hist/point 10. 1.
/gps/hist/type biasx
/gps/hist/point 0. 0.
/gps/hist/point 0.2 1.
/gps/hist/point 0.8 0.
/gps/hist/point 1. 1.
/gps/hist/type biasy
/gps/hist/point 0. 0.
/gps/hist/point 0.2 1.
/gps/hist/point 0.8 0.
/gps/hist/point 1. 1.

Resulted Distribution Plots: