def clip_modem_model(model_fn, clip):
"""
Read in ModEM model and clip to a smaller box
"""
m_obj = modem.Model()
m_obj.read_model_file(model_fn)
### --> need to convert model coordinates into lat and lon
utm_center = gis_tools.project_point_ll2utm(model_center[1],
model_center[0])
lat = np.zeros_like(m_obj.grid_north[clip:-(clip + 1)])
lon = np.zeros_like(m_obj.grid_east[clip:-(clip + 1)])
depth = m_obj.grid_z[:-1] / 1000.0
for ii, north in enumerate(m_obj.grid_north[clip:-(clip + 1)]):
m_lat, m_lon = gis_tools.project_point_utm2ll(utm_center[0],
utm_center[1] + north,
utm_center[2])
lat[ii] = m_lat
for ii, east in enumerate(m_obj.grid_east[clip:-(clip + 1)]):
m_lat, m_lon = gis_tools.project_point_utm2ll(utm_center[0] + east,
utm_center[1],
utm_center[2])
lon[ii] = m_lon
res = np.log10(m_obj.res_model[clip:-clip, clip:-clip, :])
return lat, lon, depth, res
def interpolate_grid(self, pad_east=None, pad_north=None, cell_size=None):
"""
interpolate the irregular model grid onto a regular grid.
"""
model_obj = modem.Model()
model_obj.model_fn = self.model_fn
model_obj.read_model_file()
self.grid_z = model_obj.grid_z.copy()
if cell_size is not None:
self.cell_size_east = cell_size
self.cell_size_north = cell_size
else:
self.cell_size_east = np.median(model_obj.nodes_east)
self.cell_size_north = np.median(model_obj.nodes_north)
if pad_east is not None:
self.pad_east = pad_east
if self.pad_east is None:
self.pad_east = np.where(
model_obj.nodes_east[0:25] > self.cell_size_east * 1.1)[0][-1]
if pad_north is not None:
self.pad_north = pad_north
if self.pad_north is None:
self.pad_north = np.where(
model_obj.nodes_north[0:25] > self.cell_size_north *
1.1)[0][-1]
print 'Pad north = {0}'.format(self.pad_north)
print 'Pad east = {0}'.format(self.pad_east)
new_east = np.arange(model_obj.grid_east[self.pad_east],
model_obj.grid_east[-self.pad_east - 2],
self.cell_size_east)
new_north = np.arange(model_obj.grid_north[self.pad_north],
model_obj.grid_north[-self.pad_north - 2],
self.cell_size_north)
# needs to be -1 because the grid is n+1 as it is the edges of the
# the nodes. Might need to change this in the future
model_n, model_e = np.broadcast_arrays(model_obj.grid_north[:-1, None],
model_obj.grid_east[None, :-1])
new_res_arr = np.zeros(
(new_north.size, new_east.size, model_obj.nodes_z.size))
for z_index in range(model_obj.grid_z.shape[0] - 1):
res = model_obj.res_model[:, :, z_index]
new_res_arr[:, :, z_index] = interpolate.griddata(
(model_n.ravel(), model_e.ravel()), res.ravel(),
(new_north[:, None], new_east[None, :]))
self.res_array = new_res_arr
def __init__(self):
super(MeshWidget, self).__init__()
self.model_obj = modem.Model()
self.mpl_widget = MeshPlot()
#sys.stdout = MyStream()
self.setup_ui()
def get_model_fn(self):
"""
read in an existing model file
"""
fn_dialog = QtGui.QFileDialog()
fn = str(fn_dialog.getOpenFileName(caption='Choose ModEM model file',
filter='*.rho'))
self.model_obj = modem.Model()
self.model_obj.read_model_file(fn)
self.dir_path = os.path.dirname(fn)
def load_edi_files(self):
fn_list = QtGui.QFileDialog().getOpenFileNames(
caption='Choose EDI Files',
filter='*.edi')
self.edi_list = []
for fn in fn_list:
self.edi_list.append(str(fn))
self.model_obj = modem.Model(edi_list=self.edi_list)
self.model_obj.get_station_locations()
self.mpl_widget.plot_mesh(self.model_obj)
def __init__(self, model_fn, data_fn):
'''
Class for extracting field values at arbitrary locations from a 3D MODEM model.
The model-mesh is centered on the centre-point of station-locations.
:param model_fn: name of model file
:param data_fn: name of data file
'''
# Read data and model files
self._model_fn = model_fn
self._data_fn = data_fn
try:
self._d = modem.Data()
self._d.read_data_file(data_fn=self._data_fn)
except Exception as err:
print 'Failed to read %s' % (self._data_fn)
logging.error(traceback.format_exc())
exit(-1)
try:
self._m = modem.Model(model_fn=self._model_fn,
station_object=self._d.station_locations)
self._m.read_model_file()
except Exception as err:
print 'Failed to read %s' % (self._model_fn)
logging.error(traceback.format_exc())
exit(-1)
# Re-orient model coordinates based on the centre of data locations
self._mx = self._m.grid_east + self._d.center_point['east']
self._my = self._m.grid_north + self._d.center_point['north']
self._mz = self._m.grid_z
# Compute cell-centre coordinates
self._mcx = (self._mx[1:] + self._mx[:-1]) / 2.
self._mcy = (self._my[1:] + self._my[:-1]) / 2.
self._mcz = (self._mz[1:] + self._mz[:-1]) / 2.
# Create mesh-grid based on cell-centre coordinates
self._mgx, self._mgy, self._mgz = np.meshgrid(self._mcx, self._mcy,
self._mcz)
# List of xyz coodinates of mesh-grid
self._mgxyz = np.vstack(
[self._mgx.flatten(),
self._mgy.flatten(),
self._mgz.flatten()]).T
# Create Kd-Tree based on mesh-grid coordinates
self._tree = cKDTree(self._mgxyz)
def make_vtk_files(self):
if self.model_type == 'ModEM':
m_obj = modem.Model()
m_obj.read_model_file(os.path.join(self.cwd, self.model_fn))
m_obj.write_vtk_file(vtk_save_path=self.cwd,
vtk_fn_basename=self.vtk_model_fn)
d_obj = modem.Data()
d_obj.read_data_file(self.resp_fn)
d_obj.write_vtk_station_file(vtk_save_path=self.cwd,
vtk_fn_basename=self.vtk_station_fn)
program = 'modem2vtk'
elif self.model_type == 'WS':
program = 'ws2vtk'
subprocess.call([
program, self.model_fn, self.resp_fn, self.vtk_model_fn,
self.vtk_station_fn
])
def _get_model(self):
"""
get model to put into array
"""
model_obj = modem.Model()
model_obj.model_fn = self.model_fn
model_obj.read_model_file()
self.cell_size_east = np.median(model_obj.nodes_east)
self.cell_size_north = np.median(model_obj.nodes_north)
self.pad_east = np.where(
model_obj.nodes_east[0:10] > self.cell_size_east * 1.1)[0][-1]
self.pad_north = np.where(
model_obj.nodes_north[0:10] > self.cell_size_north * 1.1)[0][-1]
self.grid_z = model_obj.grid_z.copy()
self.res_array = model_obj.res_model[self.pad_north:-self.pad_north,
self.pad_east:-self.pad_east, :]
def get_model_lower_left_coord(self,
model_fn=None,
model_center=None,
pad_east=0,
pad_north=0):
"""
Find the models lower left hand corner in (lon, lat) decimal degrees
"""
if model_fn is not None:
self.model_fn = model_fn
if self.model_fn is None:
raise IOError('Need to input a ModEM model file name to read in')
self.pad_east = pad_east
self.pad_north = pad_north
model_obj = modem.Model()
model_obj.model_fn = self.model_fn
model_obj.read_model_file()
if model_center:
center_zone, center_east, center_north = gis_tools.project_point_ll2utm(
model_center[1], model_center[0])
lower_left_east = center_east+model_obj.grid_center[1]+\
model_obj.nodes_east[0:pad_east].sum()-\
model_obj.nodes_east[pad_east]/2
lower_left_north = center_north+model_obj.grid_center[1]+\
model_obj.nodes_north[0:pad_north].sum()+\
model_obj.nodes_north[pad_north]/2
ll_lat, ll_lon = gis_tools.project_point_utm2ll(
lower_left_north, lower_left_east, center_zone)
print 'Lower Left Coordinates should be ({0:.5f}, {1:.5f})'.format(
ll_lon, ll_lat)
return (ll_lon, ll_lat)
else:
raise IOError('Need to input model center (lon, lat)')
data_obj = modem.Data(edi_list=inv_edi_list, period_list=inv_period_list)
data_obj.error_type_z = 'eigen_floor'
data_obj.error_type_tipper = 'absolute_floor'
data_obj.error_value_z = 3.0
data_obj.error_value_tipper = .02
#--> here is where you can rotate the data
data_obj.write_data_file(
save_path=save_path,
fn_basename="shz_modem_data_err{0:02.0f}_tip{1:02.0f}.dat".format(
data_obj.error_value_z, data_obj.error_value_tipper))
#==============================================================================
# First make the mesh
#==============================================================================
mod_obj = modem.Model(station_object=data_obj.station_locations)
mod_obj.cell_size_east = 400
mod_obj.cell_size_north = 400
mod_obj.pad_east = 8
mod_obj.pad_north = 8
mod_obj.pad_method = 'extent1'
mod_obj.pad_stretch_h = 1.8
mod_obj.pad_z = 5
mod_obj.n_layers = 50
mod_obj.z1_layer = 10
mod_obj.z_target_depth = 30000.
#--> here is where you can rotate the mesh
mod_obj.mesh_rotation_angle = 0
mod_obj.make_mesh()
#mont_model_center = (583337., 1849383.+1400.)
pad = 5
dem_cell_size = 200.
bathym_cell_size = 900
res_air = 1e12
elev_cell = 30
#starting model resistivity
sm_res = 100
##==============================================================================
## Do all the work
##==============================================================================
m_obj = modem.Model()
m_obj.read_model_file(model_fn)
d_obj = modem.Data()
d_obj.read_data_file(data_fn)
mont_model_center = (d_obj.center_point.east + 1200,
d_obj.center_point.north + 2900)
m_obj.add_topography_to_model(dem_fn,
model_center=mont_model_center,
cell_size=dem_cell_size,
elev_cell=30)
#### 1.) read in the dem and center it onto the resistivity model
#e_east, e_north, elevation = modem.read_dem_ascii(dem_fn, cell_size=dem_cell_size,
# model_center=mont_model_center,
#--> here is where you can rotate the data
data_obj.write_data_file(save_path=save_path,
fn_basename="{1}_modem_data_err{0:02.0f}_tip{2:02.0f}.dat".format(data_obj.error_value_z,
fn_stem,
data_obj.error_value_tipper*100),
elevation=True,
fill=True,
compute_error=True)
#==============================================================================
# Write model file
#==============================================================================
mod_obj = modem.Model(data_obj.station_locations)
mod_obj.cell_size_east = 150
mod_obj.cell_size_north = 150
mod_obj.ew_ext = 300000
mod_obj.ns_ext = 300000
mod_obj.pad_east = 10
mod_obj.pad_north = 10
mod_obj.z1_layer = 30
mod_obj.z_target_depth = 25000
mod_obj.z_bottom = 300000
mod_obj.n_layers = 40
mod_obj.make_mesh()
mod_obj.plot_mesh()
mod_obj.write_model_file(save_path=save_path,
def interpolate_model_grid(old_model_fn,
new_model_fn,
save_path=None,
new_fn_basename=None,
pad=3,
nan_rho=100,
shift_east=0,
shift_north=0):
"""
interpolate an old model onto a new model
Arguments
------------------
**old_model_fn** : string
full path to the old model file, or the file
that contains the original model that will be
interpolated onto a new grid, new_model_fn
**new_model_fn** : string
full path to the new model file to interpolate
old_model_fn on to.
**save_path** : string
directory path to save new interpolated model file
*default* is os.path.dirname(new_model_fn)
**new_fn_basename** : string
filename given to the new interpolated model
*default* is
os.path.basename(new_model_fn+'interp')
**pad** : int
number of cells which to pad outer values of the grid.
Say new_model_fn is larger than old_model_fn, then there
will be Nan where the model don't match up, pad will
extend values from the given number of cells from the edge
of new_model_fn.
**nan_rho** : float
if there are Nan in the new_model, they will be given
this value. *default* is 100 Ohm-m
**shift_east** : float
shift east of new_model grid relative to the old
model grid in meters. *Default* is 0
**shift_north** : float
shift north of new_model grid relative to the old
model grid in meters. *Default* is 0
"""
print 'Interpolating {0} into {1}'.format(old_model_fn, new_model_fn)
# check to see if the old model is modem or ws
if old_model_fn[-4:] == '.rho':
old_mod = modem.Model()
old_mod.read_model_file(old_model_fn)
else:
old_mod = ws.WSModel(old_model_fn)
old_mod.read_model_file()
# check to see if the new model is modem or ws
if new_model_fn[-4:] == '.rho':
new_mod = modem.Model()
new_mod.read_model_file(new_model_fn)
new_ext = '.rho'
new_fn_type = 'modem'
else:
try:
new_mod = ws.WSModel(new_model_fn)
new_mod.read_model_file()
except ValueError:
new_mod = ws.WSMesh()
new_mod.read_initial_file(new_model_fn)
new_ext = ''
new_fn_type = 'ws'
if save_path is None:
save_path = os.path.dirname(new_model_fn)
if new_fn_basename is None:
fn = os.path.basename(new_model_fn)
ext_find = fn.find('.')
if ext_find == -1:
ext_find = len(fn) - 1
new_fn_basename = '{0}_interp{1}'.format(fn[0:ext_find], new_ext)
print 'Start Time = {0}'.format(time.ctime())
# make a grid of old model
old_north, old_east = np.broadcast_arrays(old_mod.grid_north[:-1, None],
old_mod.grid_east[None, :-1])
#2) do a 2D interpolation for each layer, much faster
# make a new array of zeros to put values with shape of new model
new_res = np.zeros((new_mod.nodes_north.shape[0],
new_mod.nodes_east.shape[0], new_mod.nodes_z.shape[0]))
for zz in range(new_mod.nodes_z.shape[0]):
try:
old_zz = np.where(old_mod.grid_z >= new_mod.grid_z[zz])[0][0]
if old_zz >= old_mod.nodes_z.size - 1:
old_zz = old_mod.nodes_z.size - 1
except IndexError:
old_zz = -1
print 'New depth={0:.2f}; old depth={1:.2f}'.format(
new_mod.grid_z[zz], old_mod.grid_z[old_zz])
new_res[:, :, zz] = spi.griddata(
(old_north.ravel(), old_east.ravel()),
old_mod.res_model[:, :, old_zz].ravel(),
(new_mod.grid_north[:-1, None] + shift_north,
new_mod.grid_east[None, :-1] + shift_east),
method='linear')
new_res[0:pad, pad:-pad, zz] = new_res[pad, pad:-pad, zz]
new_res[-pad:, pad:-pad, zz] = new_res[-pad - 1, pad:-pad, zz]
new_res[:, 0:pad,
zz] = new_res[:, pad,
zz].repeat(pad).reshape(new_res[:, 0:pad,
zz].shape)
new_res[:, -pad:,
zz] = new_res[:, -pad - 1,
zz].repeat(pad).reshape(new_res[:, -pad:,
zz].shape)
#
new_res[np.where(np.nan_to_num(new_res) == 0.0)] = 100.0
if new_fn_type == 'modem':
new_mod.write_model_file(save_path=save_path,
model_fn_basename=new_fn_basename,
res_model=new_res)
else:
nfid = file(os.path.join(save_path, new_fn_basename), 'w')
nfid.write('# interpolated starting model for ws written by mtpy\n')
nfid.write('{0} {1} {2} {3}\n'.format(new_mod.nodes_north.shape[0],
new_mod.nodes_east.shape[0],
new_mod.nodes_z.shape[0], 0))
# write S--> N block
for ii, n_node in enumerate(new_mod.nodes_north):
nfid.write('{0:>12.1f}'.format(abs(n_node)))
if ii != 0 and np.remainder(ii + 1, 5) == 0:
nfid.write('\n')
elif ii == new_mod.nodes_north.shape[0] - 1:
nfid.write('\n')
# write W--> E block
for jj, e_node in enumerate(new_mod.nodes_east):
nfid.write('{0:>12.1f}'.format(abs(e_node)))
if jj != 0 and np.remainder(jj + 1, 5) == 0:
nfid.write('\n')
elif jj == new_mod.nodes_east.shape[0] - 1:
nfid.write('\n')
# write top--> bottom block
for kk, z_node in enumerate(new_mod.nodes_z):
nfid.write('{0:>12.1f}'.format(abs(z_node)))
if kk != 0 and np.remainder(kk + 1, 5) == 0:
nfid.write('\n')
elif kk == new_mod.nodes_z.shape[0] - 1:
nfid.write('\n')
for kk in range(new_mod.nodes_z.shape[0]):
for jj in range(new_mod.nodes_east.shape[0]):
for ii in range(new_mod.nodes_north.shape[0]):
nfid.write('{0:.4e}\n'.format(
new_res[(new_mod.nodes_north.shape[0] - 1) - ii, jj,
kk]))
nfid.close()
print 'Wrote file to {0}'.format(
os.path.join(save_path, new_fn_basename))
# new_mesh = ws.WSMesh()
# new_mesh.write_initial_file(nodes_north=new_mod.nodes_north,
# nodes_east=new_mod.nodes_east,
# nodes_z=new_mod.nodes_z,/home/jpeacock/Documents/ModEM/LV/geo_err12/lv_geo_err03_cov5_NLCG_065.res
# res_model=new_res,
# save_path=save_path)
print 'End Time = {0}'.format(time.ctime())
return os.path.join(save_path, new_fn_basename)
# mfn = r"c:\Users\jpeacock\OneDrive - DOI\Geothermal\GreatBasin\modem_inv\canv_01\canv_t03_c04_084.rho"
mfn = r"c:\Users\jpeacock\OneDrive - DOI\Geothermal\GreatBasin\modem_inv\canv_01\canv_z10_c06_150.rho"
# mfn = r"c:\Users\jpeacock\OneDrive - DOI\Geothermal\Umatilla\modem_inv\inv_06\um_z05_c03_083.rho"
# model_center = (-118.704435 + .03, 45.597757000000001 + .02)
model_center = (-119.015192, 38.615252)
lower_left = (-124.2937861, 32.5799747)
z_dict = {
"surface": np.array((0, 5000)),
"middle_crust": np.array((12000, 17000)),
"lower_crust": np.array((17000, 35000)),
}
pad = 10
m = modem.Model()
m.read_model_file(mfn)
gx, gy = np.meshgrid(m.grid_east, m.grid_north)
fig = plt.figure(1)
fig.clf()
for ii, key in enumerate(["surface", "middle_crust", "lower_crust"]):
z = z_dict[key]
index_min = np.where(m.grid_z <= z.min())[0][-1]
index_max = np.where(m.grid_z >= z.max())[0][0]
conductance = (1.0 / m.res_model[:, :, index_min:index_max]) * abs(
m.grid_z[index_min:index_max])
conductance = np.log10(conductance.sum(axis=2))
#mb_model_fn = r"/home/jpeacock/Documents/ModEM/MB_MT/WS_StartingModel_03_tipper/cov3_mb_tipper_NLCG_028.rho" #mb_model_fn = r"c:\Users\jpeacock\Documents\MonoBasin\cov3_mb_tipper_NLCG_028.rho" #grid already made, use it to combine the models comb_model_fn = r"c:\Users\jpeacock\Documents\MonoBasin\modem_inv\inv_02\ml_sm02_lake.rho" #locate model centers (E, N) #mb_center = (327150., 4194900.) # lv_center old lv_center = (336800, 4167525) lv_center = (331534., 4179614.) #comb_center = (331515+5285, 4179690) # big center comb_center = (328520., 4201968.) #--> read in the model files lv_mod = modem.Model() lv_mod.read_model_file(lv_model_fn) #mb_mod = modem.Model() #mb_mod.read_model_file(mb_model_fn) comb_mod = modem.Model() comb_mod.read_model_file(comb_model_fn) #--> interpolate each grid onto the combined grid #mb_res = interp_grid(mb_mod, # comb_mod, # shift_east=-comb_center[0]+mb_center[0], # shift_north=-comb_center[1]+mb_center[1], # pad=1, # dim='2d',
#2) next interpolate ont the new mesh (3D interpolation, slow)
new_res = spi.griddata((north.ravel(), east.ravel(), vert.ravel()),
old_model_obj.res_model.ravel(),
(new_model_obj.plot_north[:, None, None],
new_model_obj.plot_east[None, :, None],
new_model_obj.plot_z[None, None, :]),
method='linear')
print 'Shape of new res = {0}'.format(new_res.shape)
return new_res
# =============================================================================
# Shift modem grid
# =============================================================================
mfn = r"c:\Users\jpeacock\Documents\Geysers\gz_sm50_topo_ocean.rho"
m1_obj = modem.Model()
m1_obj.read_model_file(mfn)
m2_obj = modem.Model()
m2_obj.read_model_file(mfn)
m2_obj.res_model = interp_grid(m1_obj, m2_obj, shift_east=600)
m2_obj.res_model[np.where(m1_obj.res_model < 49)] = m1_obj.res_model[np.where(m1_obj.res_model < 49)]
m2_obj.write_model_file(model_fn_basename=r"gz_sm50_topo_ocean_shifted.rho")
m2_obj.write_vtk_file(vtk_fn_basename='gz_sm_shifted_res')
### write new covariance file
cov = modem.Covariance(grid_dimensions=m2_obj.res_model.shape)
cov.write_covariance_file(save_path=m2_obj.save_path, model_fn=m2_obj.model_fn)
# ==============================================================================
# interpolate all models onto the same grid
# ==============================================================================
dfn = r"/home/jpeacock/Documents/ModEM/LV/hs1000_no_tipper/lv_dp_23p_no_tipper.dat"
mfn_no_tipper = (
r"/home/jpeacock/Documents/ModEM/LV/hs1000_no_tipper/hs1000_no_tipper_NLCG_070.rho"
)
mfn_tipper = (
r"/home/jpeacock/Documents/ModEM/LV/hs1000_tipper/hs1000_tipper_NLCG_042.rho"
)
modem_data = modem.Data()
modem_data.read_data_file(dfn)
modem_nt = modem.Model()
modem_nt.read_model_file(mfn_no_tipper)
modem_tip = modem.Model()
modem_tip.read_model_file(mfn_tipper)
# --> average all as a geometric mean
avg_res = (modem_nt.res_model * modem_tip.res_model)**(1.0 / 2)
# avg_res = (nr_ws_hs1*nr_ws_sm1*nr_ws_sm2*nr_nt*nr_tip)**(1./5)
x, y = np.meshgrid(modem_tip.grid_east, modem_tip.grid_north)
kk = 30
kwargs = {"cmap": "jet_r", "vmin": -1, "vmax": 4}
fig = plt.figure(4)
ax1 = fig.add_subplot(1, 3, 1, aspect="equal")
print "Shape of new res = {0}".format(new_res.shape)
return new_res
# ==============================================================================
# interpolate all models onto the same grid
# ==============================================================================
dfn = r"C:\Users\jpeacock\Documents\iMush\modem_inv\shz_inv_02\shz_modem_data_err03_tip02_edit.dat"
mfn_imush = r"c:\Users\jpeacock\Documents\iMush\modem_inv\paul_final_model\Z4T3_cov0p2x2_L1E2_NLCG_061.rho"
mfn_shz = r"c:\Users\jpeacock\Documents\iMush\modem_inv\shz_inv_02\shz_smt_z04_t03_c02_NLCG_070.rho"
modem_data = modem.Data()
modem_data.read_data_file(dfn)
modem_imush = modem.Model()
modem_imush.read_model_file(mfn_imush)
modem_shz = modem.Model()
modem_shz.read_model_file(mfn_shz)
imush_center = (46.450149, -122.032858)
shz_center = (46.310461, -122.194629)
imush_east, imush_north, zone = gis_tools.project_point_ll2utm(
imush_center[0], imush_center[1]
)
shz_east, shz_north, zone = gis_tools.project_point_ll2utm(shz_center[0], shz_center[1])
d_east = imush_east - shz_east + 8500
d_north = imush_north - shz_north + 8000
