DeltaEl2Alfriend:

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   Compute Alfriend differential elements from standard differential elements.

   Since version 7.
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   Usage:
   [dElA,T] = DeltaEl2Alfriend( e, w, M, dEl );
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   ------
   Inputs
   ------
   e           (1)  Eccentricity
   w           (1)  Argument of perigee [rad]
   M           (1)  Mean anomaly [rad]
   dEl        (1,6) Orbital element differences [a,i,W,w,e,M]

   -------
   Outputs
   -------
   dElA       (1,6) Orbital element differences [a,th,i,q1,q2,W]
   T          (6,6) Transformation matrix
   
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Children:

Math: Trigonometry/UnwrapPhase
OrbitMiniToolbox: Support/M2Nu