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Abstract
I/O
Examples
Particulars
Required Reading
Version
Index_Entries

Abstract


   CSPICE_WNFETD fetches a particular interval from
   a double precision window.

   For important details concerning this module's function, please refer to
   the CSPICE routine wnfetd_c.

I/O

   
   Given:

      window   the scalar window containing zero or  
               more intervals. 'window' must be created as
               a window structure via a cspice_celld call. 

      n        the scalar integer index of a particular  
               interval within 'window'.  Indices range from 
               0 to N-1, where N is the number of intervals
               in the window.

   the call:

      cspice_wnfetd, window, n, left, right

   returns:

      left, 
      right    the scalar, double precision left and right 
               endpoints of the 'n' interval in the input 
               'window'.

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.

      ;; 
      ;; Create a cell containing a double
      ;; precision 8-vector.
      ;;
      win1 = cspice_celld( 8 )

      ;;
      ;; Define a window with three intervals.
      ;;
      darray = [ [ 1.d, 3.0], [ 7.0, 11.0], [23.0, 27.0] ]

      ;;
      ;; Add the window data to the cell.
      ;;
      for i=0,2 do begin

         cspice_wninsd, darray[0,i], darray[1,i], win1

      endfor

      ;;
      ;; Calculate the number of intervals in the
      ;; return window 'win1'.
      ;;
      no_intervals = cspice_wncard(win1)

      ;;
      ;; Output the intervals.
      ;;
      print, "Window contents:"
      for i= 0, (no_intervals -1 ) do begin

         cspice_wnfetd, win1, i, left, right
         print, left, right

      endfor

   IDL outputs:

      Window contents:
      1.0000000       3.0000000
      7.0000000       11.000000
      23.000000       27.000000

Particulars


   The user must create any needed window structures with
   cspice_celld prior to use regardless of whether the routine
   uses the window as input or returns it as output.

Required Reading


   ICY.REQ
   CELLS.REQ
   WINDOWS.REQ

Version


   -Icy Version 1.0.2, 26-NOV-2007, EDW (JPL)

      Implemented use of cspice_wncard function to return 
      window cardinality.

   -Icy Version 1.0.1, 12-SEP-2006, EDW (JPL)

      Correct Required Reading citation CELL.REQ to CELLS.REQ.

   -Icy Version 1.0.0, 08-AUG-2004, EDW (JPL)

Index_Entries

 
   fetch an interval from a d.p. window 
 



Wed Apr  5 17:58:05 2017