[mapserver-users] How to use ANNOTATION layer in combination with RASTER data?

[Jorrit Goddijn]

Hi all,

I try draw an ANNOTATION type layer based on RASTER type layer.  When doing this based on a shape file I would set the LABEL item on the ANNOTATION layer to be attribute used in the shapefile.

What LABELITEM should I use when using RASTER data?

I posted the Mapfile I have so far hereunder.

Thank you for your help.

Bye

Jorrit

#----------------------------------------------------------------------------
#grib wave direction layer example
#----------------------------------------------------------------------------
    LAYER
        NAME "grib_data"
        TYPE RASTER

        DATA "/var/www/mapserver/data/grib/routeguard/4nwcurpol99_2013110412.grb2" #Current direction @ Mean sea level
        PROCESSING "BANDS=1"
        PROCESSING "SCALE=0,360" #scale all degrees

        PROJECTION
            "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs +pm=-360"
        END
    END

#---------------------------------------------------------------------------
# the annotation layer
#---------------------------------------------------------------------------
  LAYER
    NAME        "grib_label"
    DATA        "grib_data"
    STATUS      OFF
    TYPE        ANNOTATION
    CLASSITEM   "CLASS" # do I need it?
    LABELITEM   "VAR_10-1-0_L101" #what variable name to use?

    CLASS
      EXPRESSION [VAR_10-1-0_L101] #gives parse error
      STYLE
        COLOR      -1 -1 -1
      END

      LABEL
        COLOR 132 31 31
        TYPE TRUETYPE
        FONT arial-bold
        SIZE 12
        ANTIALIAS TRUE
        POSITION CL
        PARTIALS FALSE
        MINDISTANCE 300
        BUFFER 4
      END # end of label
    END # end of class
  END # annotation layer



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