== MS_VTI

   MS_VTI - generate elastic constants for a vertically transverse isotropic
             medium from Thomsen parameters. Symmetry is in the 3-axis. 

 // Part of MSAT - The Matlab Seismic Anisotropy Toolkit //

 Given Thomsen parameters for a VTI medium, return the elasticity 
 matrx

   [C]=MS_VTI(vp,vs,rh,eps,gam,del)

   Inputs: 
       rh  : Density (kg/m2) 
       vp  : km/s 
       vs  : km/s 
       eps, gam, del : Dimensionless

   Output:
        C : Stiffness tensor (6x6 notation, GPa)

 See also: MS_iso, MS_elasticDB
