def check_random_odd(self):
     for h in [0.1,0.5,1,5.5,10]:
         for n in [33,65,55]:
             f=random ((n,))
             af=sum(f,axis=0)/n
             f=f-af
             assert_almost_equal(sum(f,axis=0),0.0)
             assert_array_almost_equal(itilbert(tilbert(f,h),h),f)
             assert_array_almost_equal(tilbert(itilbert(f,h),h),f)
 def check_definition(self):
     for h in [0.1,0.5,1,5.5,10]:
         for n in [16,17,64,127]:
             x = arange(n)*2*pi/n
             y = itilbert(sin(x),h)
             y1 = direct_itilbert(sin(x),h)
             assert_array_almost_equal (y,y1)
             assert_array_almost_equal(itilbert(sin(x),h),
                                       direct_itilbert(sin(x),h))
             assert_array_almost_equal(itilbert(sin(2*x),h),
                                       direct_itilbert(sin(2*x),h))
 def check_itilbert_relation(self):
     for n in [16,17,64,127]:
         x = arange(n)*2*pi/n
         f = sin (x)+cos (2*x)*sin(x)
         y = ihilbert(f)
         y1 = direct_ihilbert(f)
         assert_array_almost_equal (y,y1)
         y2 = itilbert(f,h=10)
         assert_array_almost_equal (y,y2)