Meshes, Models, and Fields

emg3d.meshes Module

Everything related to meshes appropriate for the multigrid solver.

Functions

construct_mesh(frequency, properties, center)	Return a TensorMesh for given parameters.
get_origin_widths(frequency, properties, center)	Return origin and cell widths for given parameters.
skin_depth(frequency, conductivity[, mu])	Return skin depth for provided frequency and conductivity.
wavelength(skin_depth)	Return the wavelength.
good_mg_cell_nr([max_nr, max_prime, min_div])	Returns ‘good’ cell numbers for the multigrid method.
min_cell_width(skin_depth[, pps, limits])	Return the minimum cell width.
get_hx_h0(freq, res, domain[, fixed, …])	Return cell widths and origin for given parameters.
get_cell_numbers(max_nr[, max_prime, min_div])
get_stretched_h(min_width, domain, nx[, x0, …])	Return cell widths for a stretched grid within the domain.
get_domain([x0, freq, res, limits, …])	Get domain extent and minimum cell width as a function of skin depth.
get_hx(alpha, domain, nx, x0[, resp_domain])	Return cell widths for given input.

Classes

TensorMesh([h, origin])

A slightly modified discretize.TensorMesh.

emg3d.models Module

Everything to create model-properties for the multigrid solver.

Classes

Model(grid[, property_x, property_y, …])	Create a model instance.
VolumeModel(grid, model, sfield)	Return a volume-averaged version of provided model.

emg3d.maps Module

Interpolation routines mapping grids to grids, grids to fields, and fields to grids.

Functions

grid2grid(grid, values, new_grid[, method, …])	Interpolate values located on grid to new_grid.
interp3d(points, values, new_points, method, …)	Interpolate values in 3D either linearly or with a cubic spline.
edges2cellaverages(ex, ey, ez, vol, out_x, …)	Interpolate fields defined on edges to volume-averaged cell values.

Classes

MapConductivity()	Maps σ to computational variable σ (conductivity).
MapLgConductivity()	Maps log_10(σ) to computational variable σ (conductivity).
MapLnConductivity()	Maps log_e(σ) to computational variable σ (conductivity).
MapResistivity()	Maps ρ to computational variable σ (conductivity).
MapLgResistivity()	Maps log_10(ρ) to computational variable σ (conductivity).
MapLnResistivity()	Maps log_e(ρ) to computational variable σ (conductivity).

emg3d.fields Module

Everything related to the multigrid solver that is a field: source field, electric and magnetic fields, and fields at receivers.

Functions

get_source_field(grid, src, freq[, strength])	Return the source field.
get_receiver(grid, values, coordinates[, …])	Return values corresponding to grid at coordinates.
get_receiver_response(grid, field, rec)	Return the field (response) at receiver coordinates.
get_h_field(grid, model, field)	Return magnetic field corresponding to provided electric field.

Classes

Field	Create a Field instance with x-, y-, and z-views of the field.
SourceField	Create a Source-Field instance with x-, y-, and z-views of the field.