ExportToPSSMatrix:

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   Export two dimensional matrices to a file that can be read by pss_matrix.

   You can then read from the file in C++ using:

   #include 
   #include 
 
   ifstream matrixIn( fileName );
   matrixIn >>  matrix1;
   matrixIn >>  matrix2;
   matrixIn.close();

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   Form:
   ExportToPSSMatrix( fileName, matrix1, matrix2, ... )
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   ------
   Inputs
   ------
   fileName       (1,:)  File name
   matrix1        (:,:)  First matrix
   matrix2        (:,:)  Second matrix
   ...            (:,:)  Additional matrices

   -------
   Outputs
   -------
   None

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