pyrocko.orthodrome_ext

C-extension supporting pyrocko.orthodrome.

Functions

azibazi	Calculate azimuth and backazimuth directions of great circle path at a pair of points on spherical earth.
azibazi_numpy	Calculate azimuth and backazimuth directions of great circle path at pairs of points on spherical earth (array version).
distance_accurate50m	Calculate great circle distance between pair of points on ellipsoidal earth.
distance_accurate50m_numpy	Calculate great circle distance between pairs of points on ellipsoidal earth (array version).

azibazi()

Calculate azimuth and backazimuth directions of great circle path at a pair of points on spherical earth.

Parameters:

• alat (float) – Latitude of point 1.

• alon (float) – Longitude of point 1.

• blat (float) – Latitude of point 2.

• blon (float) – Longitude of point 2.

azibazi_numpy()

Calculate azimuth and backazimuth directions of great circle path at pairs of points on spherical earth (array version).

Parameters:

• alat (numpy.ndarray) – Latitudes of points 1

• alon (numpy.ndarray) – Longitudes of points 1

• blat (numpy.ndarray) – Latitudes of points 2

• blon (numpy.ndarray) – Longitudes of points 2

distance_accurate50m()

Calculate great circle distance between pair of points on ellipsoidal earth.

Parameters:

• alat (float) – Latitude of point 1

• alon (float) – Longitude of point 1

• blat (float) – Latitude of point 2

• blon (float) – Longitude of point 2

distance_accurate50m_numpy()

Calculate great circle distance between pairs of points on ellipsoidal earth (array version).

Parameters:

• alat (numpy.ndarray) – Latitudes of points 1

• alon (numpy.ndarray) – Longitudes of points 1

• blat (numpy.ndarray) – Latitudes of points 2

• blon (numpy.ndarray) – Longitudes of points 2