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Channel Plot -- models a rounded channel in the earth
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Rock0
======
The properties of the first rock in the earth model( Vp, Vs, Rho ).

Rock1
======
The rock properties of the channel( Vp, Vs, Rho ).

Rock2
=====
Rock properties underneath the channel( Vp,Vs,Rho ). Optional argument that will default to Rock1.

Thickness
==========
The depth of the channel. TODO( in what units?????)

margin
=======
TODO????????????

slice
======
Specify which type of cross-section to plot. 

trace
======
If not using a spatial slice, specify which trace to view a cross section of.

.. include:: defaultargs.rst
