OrientationStatistics  [--returnparameterfile <std::string>]
                          [--processinformationaddress <std::string>]
                          [--xml] [--echo] [--debug] [--combine] [--asym]
                          [--order <double>] [--weight <double>] [--]
                          [--version] [-h] <std::vector<std::string>> ...


   --returnparameterfile <std::string>
     Filename in which to write simple return parameters (int, float,
     int-vector, etc.) as opposed to bulk return parameters (image,
     geometry, transform, measurement, table).

   --processinformationaddress <std::string>
     Address of a structure to store process information (progress, abort,
     etc.). (default: 0)

     Produce xml description of command line arguments (default: 0)

     Echo the command line arguments (default: 0)

     debug (default: 0)

     If set, also show the statistics for the orientation combining all
     input orientations. (default: 0)

     If set, the orientation is not antipodal symmetric (default: 0)

   --order <double>
     order for the calculation of Electrostatic energy. (default: 2)

   --weight <double>
     Weight for single shell term, 1-weight for mutiple shell term.
     (default: 0.5)

   --,  --ignore_rest
     Ignores the rest of the labeled arguments following this flag.

     Displays version information and exits.

   -h,  --help
     Displays usage information and exits.

   <std::vector<std::string>>  (accepted multiple times)
     Input Orientation File.

   Description: Get statistics information from a given orientation file.
   Show the (min, max, mean, std) of the minimal angles of all samples.
   Show electrostatic energy, spherical code cost function.


   OrientationStatistics grad.txt

   Author(s): Jian Cheng (jian.cheng.1983@gmail.com)

   Acknowledgements: Thank you everyone.