obspy.imaging.beachball

Draws a beachball diagram of an earthquake focal mechanism

Most source code provided here are adopted from

1. MatLab script bb.m written by Andy Michael, Chen Ji and Oliver Boyd.

2. ps_meca program from the Generic Mapping Tools (GMT).

copyright

The ObsPy Development Team (devs@obspy.org)

license

GNU Lesser General Public License, Version 3 (https://www.gnu.org/copyleft/lesser.html)

Public Functions

aux_plane	Get Strike and dip of second plane.
beach	Return a beach ball as a collection which can be connected to an current matplotlib axes instance (ax.add_collection).
beachball	Draws a beach ball diagram of an earthquake focal mechanism.
mt2axes	Calculates the principal axes of a given moment tensor.
mt2plane	Calculates a nodal plane of a given moment tensor.
plot_dc	Uses one nodal plane of a double couple to draw a beach ball plot.
plot_mt	Uses a principal axis T, N and P to draw a beach ball plot.
pol2cart
strike_dip	Finds strike and dip of plane given normal vector having components n, e, and u.
tdl	Helper function for mt2plane.
xy2patch

Classes

MomentTensor	A moment tensor.
NodalPlane	A nodal plane.
PrincipalAxis	A principal axis.