Grid definition - polar stereographic

      Octet
      No.
      Contents
      7-8Nx - number of points along X-axis
      9-10Ny - number of points along Y-axis
      11-13La1 - latitude of first grid point (See Note 3)
      14-16Lo1 - longitude of first grid point (See Note 4)
      17Resolution and component flags (see Code table 7)
      18-20LoV - orientation of the grid; i.e. the longitude value of the meridian which is parallel to the Y-axis (or columns of the grid) along which latitude increases as the Y-coordinate increases (the orientation longitude may or may not appear on a particular grid) (See Note 4)
      21-23Dx - X-direction grid length (see Note 2)
      24-26Dy - Y-direction grid length (see Note 2)
      27Projection center flag (see Note 5)
      28Scanning mode (flags - see Code table 8)
      29-32Set to zero (reserved)



      NOTES:

      1. Latitude and longitude are in millidegrees (thousandths of a degree).

      2. Grid lengths are in units of meters, at the 60-degree parallel nearest to the pole on the projection plane.

      3. Latitude values are limited to the range 0-90000; bit 1 is set to 1 to indicate south latitude.

      4. Longitude values are limited to the range 0-360000; bit 1 is set to 1 to indicate west longitude.

      5. Octet 27 (projection center flag):
        bit 1 set to 0 if North Pole is on the projection plane
        bit 1 set to 1 if South Pole is on the projection plane
        (to be set up as flag table).

      6. Where items are not given, the appropriate octet(s) should have all bits set to 1, the "missing" indicator.

      7. See Note 11 under Grid definition - latitude/longitude grid (or equidistant cylindrical).

      8. The resolution flag (bit 1 of Code table 7) is not applicable.



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