No subject

display in mapserver.

  layer
    GROUP slp
    NAME something
    DEBUG ON
    DATA ak2s
    TYPE LINE
    STATUS ON
    class
      color 200 200 0
    end
  end

  layer
    GROUP slp
    NAME label_slp
    DATA ak2s
    LABELITEM elev
    TYPE ANNOTATION
    CLASS
      LABEL
        POSITION CC
        SIZE TINY
        COLOR 0 0 0 
      END
    END
  end

So, that is the basic hack.  To do:

* allow the user to control the contour interval, color, ...
  - allow variation of contours - dashed lines?
* control annotation the values 1004 vs 1004.000 (cleanup through PostGIS)
* properly identify the values -- its not just heights anymore...

Now you can contour any parameter you want:  sea level pressure, heights,
temperature, ....  or about anything gridded in the oceanographic
/meteorologic world.  For all the weather winnies of the world...

Sample image: Sea level pressure map as produced from NCEP's
  Global Forecast System on a 1/2 deg x 1/2 deg grid.
  http://ak.aoos.org/mapserver/aoos/slp.png

If there is an easier way, please send it my way.

Happy Maphacking!
Rob
-- 
Rob Cermak : 907-474-7948 : FAX 907-474-7204 : PGP = 0x75869A6E
Alaska Ocean Observing System : Data Management 
School of Fisheries and Ocean Sciences : University of Alaska Fairbanks
cermak at sfos.uaf.edu : fnjrc1 at uaf.edu
ED9U1M7P01 at alaska.edu : cermak at alaska.edu