def test_round_trip():
sph_io.savez('__test.npz', y=1)
data = sph_io.load('__test.npz')
assert_equal(data['y'], 1)
sph_io.remove('__test.npz')
bvecs = bvecs[b > 0]
b = b[b > 0]
theta, phi, _ = coord.car2sph(*bvecs.T)
theta_odf, phi_odf = theta132, phi132
kernel = inv_funk_radon_even_kernel
kernel_N = 8
X = kernel_matrix(theta, phi, theta_odf, phi_odf, kernel=kernel, N=kernel_N)
D = 150 # Grid density for plots (higher => more dense)
b = 3000 + np.random.normal(scale=4, size=len(theta)) # Make up somewhat realistic b-values
xyz = np.column_stack(coord.sph2car(theta, phi))
sph_io.savez('sphere_pts', gradient_theta=theta, gradient_phi=phi,
odf_theta=theta_odf, odf_phi=phi_odf, b=b)
# Fiber weights
w = [0.5, 0.5]
angles = np.deg2rad(np.arange(40, 60, 5))
angles = np.insert(angles, 0, 0)
SNR = None
for k, gamma in enumerate(angles):
print "Angle:", np.rad2deg(gamma)
# Gamma is the angle separating fibres
# ================