AirshipStatespace:

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   Extract the long. and lat.-dir. statespace models for an airship
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   Form:
   [gLat,gLon] = AirshipStatespace( g )
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   ------
   Inputs
   ------
   g           (:)   statespace data structure
   useAlpha    (1)   Flag indicating which states were used to linearize:
                       1  -  vT, alpha, beta
                       0  -  u, v, w

   -------
   Outputs
   -------
   gLat        (:)   Lateral-Directional statespace
   gLat        (:)   Lateral-Directional statespace

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Children:

Common: Classes/@statespace/and.m
Common: Classes/@statespace/close.m
Common: Classes/@statespace/connect.m
Common: Classes/@statespace/eig.m
Common: Classes/@statespace/get.m
Common: Classes/@statespace/getabcd.m
Common: Classes/@statespace/getsub.m
Common: Classes/@statespace/isempty.m
Common: Classes/@statespace/mtimes.m
Common: Classes/@statespace/plus.m
Common: Classes/@statespace/series.m
Common: Classes/@statespace/set.m
Common: Classes/@statespace/statespace.m