Abstract

   CSPICE_XPOSE6 transposes a 6x6 matrix.

I/O

   Given:

      m1       any double precision 6x6 matrix.

               help, m1
                  DOUBLE = Array[6,6]

   the call:

      cspice_xpose6, m1, mout

   returns:

      mout     a double precision, 6x6 matrix which contains the transpose of
               `m1'.

               help, mout
                  DOUBLE = Array[6,6]

               `mout' may overwrite `m1'.

Parameters

   None.

Examples

   Any numerical results shown for this example may differ between
   platforms as the results depend on the SPICE kernels used as input
   and the machine specific arithmetic implementation.

   1) Given a 6x6 double precision matrix, find its transpose.


      Example code begins here.


      PRO xpose6_ex1

         ;;
         ;; Define the input matrix.
         ;;
         m1 = [ [ 1.D0,  2.D0,  3.D0,  4.D0,  5.D0,  6.D0 ],                 $
                [ 0.D0,  7.D0,  8.D0,  9.D0, 10.D0, 11.D0 ],                 $
                [ 0.D0,  0.D0, 12.D0, 13.D0, 14.D0, 15.D0 ],                 $
                [ 0.D0,  0.D0,  0.D0, 16.D0, 17.D0, 18.D0 ],                 $
                [ 0.D0,  0.D0,  0.D0,  0.D0, 19.D0, 20.D0 ],                 $
                [ 0.D0,  0.D0,  0.D0,  0.D0,  0.D0, 21.D0 ] ]

         ;;
         ;; Compute the transpose of `m1'.
         ;;
         cspice_xpose6, m1, mout

         ;;
         ;; Display the results.
         ;;
         print, 'Input matrix (M1):'
         print
         print, format='(6F6.1)', m1

         print
         print, 'Transpose of M1:'
         print
         print, format='(6F6.1)', mout

      END


      When this program was executed on a Mac/Intel/IDL8.x/64-bit
      platform, the output was:


      Input matrix (M1):

         1.0   2.0   3.0   4.0   5.0   6.0
         0.0   7.0   8.0   9.0  10.0  11.0
         0.0   0.0  12.0  13.0  14.0  15.0
         0.0   0.0   0.0  16.0  17.0  18.0
         0.0   0.0   0.0   0.0  19.0  20.0
         0.0   0.0   0.0   0.0   0.0  21.0

      Transpose of M1:

         1.0   0.0   0.0   0.0   0.0   0.0
         2.0   7.0   0.0   0.0   0.0   0.0
         3.0   8.0  12.0   0.0   0.0   0.0
         4.0   9.0  13.0  16.0   0.0   0.0
         5.0  10.0  14.0  17.0  19.0   0.0
         6.0  11.0  15.0  18.0  20.0  21.0

Particulars

   Native IDL code to calculate the same matrix result:

      mout = transpose(m1)

   The IDL transpose function accepts arbitrary NxM matrices.

Exceptions

   1)  If the input argument `m1' is undefined, an error is signaled
       by the IDL error handling system.

   2)  If the input argument `m1' is not of the expected type, or it
       does not have the expected dimensions and size, an error is
       signaled by the Icy interface.

   3)  If the output argument `mout' is not a named variable, an
       error is signaled by the Icy interface.

Files

   None.

Restrictions

   None.

Required_Reading

   ICY.REQ

Literature_References

   None.

Author_and_Institution

   J. Diaz del Rio     (ODC Space)
   E.D. Wright         (JPL)

Version

   -Icy Version 1.0.3, 10-AUG-2021 (JDR)

       Edited the header to comply with NAIF standard. Added complete
       code example.

       Added -Parameters, -Exceptions, -Files, -Restrictions,
       -Literature_References and -Author_and_Institution sections, and moved
       existing example to -Particulars.

       Removed reference to the routine's corresponding CSPICE header from
       -Abstract section.

       Added arguments' type and size information in the -I/O section.

   -Icy Version 1.0.2, 13-JUN-2011 (EDW)

       Edits to comply with NAIF standard for Icy headers.

   -Icy Version 1.0.1, 09-DEC-2005 (EDW)

       Added -Examples section.

   -Icy Version 1.0.0, 16-JUN-2003 (EDW)

Index_Entries

   transpose a 6x6 matrix