def test_recip(self):
data = np.zeros((100, 100))
vmodel = np.zeros((100, 100))
data[0:50, :] += 100.0
data[50:, :] += 200.0
vmodel[0:50, :] += 1500.0
vmodel[50:, :] += 1800.0
dt = 0.001
dz = 1.
out1 = depth_to_time(data, vmodel, dz, dt)
v2 = depth_to_time(vmodel, vmodel, dz, dt)
out2 = time_to_depth(out1, v2, dt, dz)
def test_recip(self):
data = np.zeros((100, 100))
vmodel = np.zeros((100, 100))
data[0:50, :] += 100.0
data[50:, :] += 200.0
vmodel[0:50, :] += 1500.0
vmodel[50:, :] += 1800.0
dt = 0.001
dz = 1.
out1 = depth_to_time(data, vmodel, dz, dt)
v2 = depth_to_time(vmodel, vmodel, dz, dt)
out2 = time_to_depth(out1, v2, dt, dz)
def test_timetodepth(self):
data = np.zeros((100, 100))
vmodel = np.zeros((100, 100))
data[0:50, :] += 100.0
data[50:, :] += 200.0
vmodel[0:50, :] += 1500.0
vmodel[50:, :] += 5000.0
dt = 0.001
dz = 1.0
output = time_to_depth(data, vmodel, dt, dz, twt=False)
face_change = np.floor(((49.5 * dt) * 1500.0) / dz)
self.assertTrue((output[face_change + 1, 50] - output[face_change, 50]) == 100)
def test_timetodepth(self):
data = np.zeros((100, 100))
vmodel = np.zeros((100, 100))
data[0:50, :] += 100.0
data[50:, :] += 200.0
vmodel[0:50, :] += 1500.0
vmodel[50:, :] += 5000.0
dt = 0.001
dz = 1.0
output = time_to_depth(data, vmodel, dt, dz, twt=False)
face_change = int(np.floor(((49.5 * dt) * 1500.0) / dz))
self.assertTrue((output[face_change + 1, 50] -
output[face_change, 50]) == 100)
def to_depth(self, v, dz=0.001):
"""
Convert Scan to depth domain.
Args:
v (ndarray): Interval velocities. Must be same shape as model. If
None, then the model's own permittivities are used.
dz (float): The new depth step or sampling interval, in m.
Returns:
Model. The depth-converted model, as a jeepr.Model instance.
"""
if self.domain != 'time':
raise ScanError('You can only depth-convert a time scan.')
params = copy.deepcopy(self.__dict__)
arr = time_to_depth(self, v, dz=dz, dt=self.dt)
basis = utils.srange(0, dz, arr.shape[0])
params['domain'] = 'depth'
params['dz'] = dz
params['dt'] = 0
return Scan(arr, params), basis