pyrocko.gato.grid.slowness

Classes

CartesianSlownessGrid(**kwargs)	Regular cartesian slowness grid with optional rotation.
SlownessGrid(**kwargs)	Undocumented.
SphericalSlownessGrid(**kwargs)	Regular (3D) slowness grid in spherical coordinates with optional rotation.

class SlownessGrid(**kwargs)

Bases: Grid

Undocumented.

class CartesianSlownessGrid(**kwargs)

Bases: SlownessGrid

Regular cartesian slowness grid with optional rotation.

Unrotated coordinate system is NED (north-east-down).

3D-indexing is ordered from sz (slow dimension) to sx (fast dimension) f[iz, iy, ix]. 1D-indexing uses numpy.unravel_index() on (nz, ny, nx).

If any attribute is changed after initialization, update() must be called.

♦ azimuth

float, default: 0.0

Angle of x against north [deg].

♦ dip

float, default: 0.0

Angle of y against horizontal [deg], rotation around x

♦ sx_min

float, default: 0.0

Sx axis minimum [s/m].

♦ sx_max

float, default: 0.0

Sx axis maximum [s/m].

♦ sy_min

float, default: 0.0

Sy axis minimum [s/m].

♦ sy_max

float, default: 0.0

Sy axis maximum [s/m].

♦ sz_min

float, default: 0.0

Sz axis minimum [s/m].

♦ sz_max

float, default: 0.0

Sz axis maximum [s/m].

♦ sx_delta

float, default: 1.0

Sx axis spacing [s/m].

♦ sy_delta

float, default: 1.0

Sy axis spacing [s/m].

♦ sz_delta

float, default: 1.0

Sz axis spacing [s/m].

♦ snap

str (pyrocko.gato.grid.base.GridSnap), default: 'both'

Flag to indicate how grid inconsistencies are handled.

property shape

Logical shape of the grid.

property size

Number of grid nodes.

property effective_dimension

Number of non-flat dimensions.

get_nodes(system)

Get node coordinates.

Parameters:

system (str) – Coordinate system: 'xyz', unrotated coordinate system, 'ned': rotated coordinate system in (north, east, down).

Returns:

Point coordinates in requested coordinate system.

Return type:

numpy.ndarray of shape (size, 3), where size is the number of nodes

class SphericalSlownessGrid(**kwargs)

Bases: SlownessGrid

Regular (3D) slowness grid in spherical coordinates with optional rotation.

Unrotated coordinate system is NED (north-east-down).

3D-indexing is ordered from sr (slow dimension) via stheta to sphi (fast dimension) f[ir, itheta, iphi]. 1D-indexing uses numpy.unravel_index() on (nr, ntheta, nphi).

If any attribute is changed after initialization, update() must be called.

♦ azimuth

float, default: 0.0

Angle of 0. azimuth direction against north [deg].

♦ sr_min

float, default: 0.0

Sr axis minimum [s/m].

♦ sr_max

float, default: 0.0

Sr axis maximum [s/m].

♦ stheta_min

float, default: 0.0

Lower angle limit of incidence angle [deg].

♦ stheta_max

float, default: 0.0

Upper angle limit of incidence angle [deg].

♦ sphi_min

float, default: -180.0

Lower angle limit of azimuth angle [deg].

♦ sphi_max

float, default: 180.0

Upper angle limit of azimuth angle [deg].

♦ sr_delta

float, default: 1.0

Sr axis spacing [s/m].

♦ stheta_delta

float, default: 1.0

Angle spacing in incidence [deg].

♦ sphi_delta

float, default: 1.0

Angle spacing in azimuth [deg].

♦ snap

str (pyrocko.gato.grid.base.GridSnap), default: 'both'

Flag to indicate how grid inconsistencies are handled.

property shape

Logical shape of the grid.

property size

Number of grid nodes.

property effective_dimension

Number of non-flat dimensions.

get_nodes(system)

Get node coordinates.

Parameters:

system (str) – Coordinate system: 'xy', unrotated coordinate system, 'ne': rotated coordinate system in (north, east), 'rtp', spherical coordinates in (radius, theta, phi).

Returns:

Point coordinates in requested coordinate system.

Return type:

numpy.ndarray of shape (size, 2), where size is the number of nodes