myDefautModel =  class=ExponentiallyDampedCosineModel(scale=[1], amplitude=[1], frequency=1)
myModel =  class=ExponentiallyDampedCosineModel(scale=[1], amplitude=[1], frequency=0.1)
covariance matrix at t =  1.0  :  [[ 0.367879 ]]
covariance matrix at t =  -1.0  :  [[ 0.367879 ]]
covariance matrix at t =  15.0  :  [[ 3.05902e-07 ]]
discretized covariance over the time grid= RegularGrid(start=0, step=0.333333, n=4) is= [[  1        -0.358266 -0.256709  0.367879 ]
 [ -0.358266  1        -0.358266 -0.256709 ]
 [ -0.256709 -0.358266  1        -0.358266 ]
 [  0.367879 -0.256709 -0.358266  1        ]]
