Here is my Mapfile and my log of the OGRINFO on my shapefile.
What I'm trying to do in this Mapfile is to show label with some specific
criteria:
- if the AREA(area in km²) is >= 1 then the scale of the label will be
between 1008 and 5008
- if the AREA (area in km²) is < 1 then the scale of the label will be less
than 1008.

What doesn't work:
- if I use the column'MA_NAD83' to show up the label is like this :
8989899525
  BUT, I would like to use the column 'MA_10_83' because the label is
8989-89-9525 and this doesn't work (and I don't know whyyy).
- It seems that MapServer is not able to draw my layers Superficie and
Numéro de lot because it can not reach the right columns ('SUP' and
'NO_LOT'). It's the same problem like the 'MA_10_83' (see above).
- The expression is not (always?!?!?) able to read the column 'AREA' and I
don't understand why?!?!?...

Thanks for your time & your help.


Mapfile
--------------
MAP
  NAME "Coaticook"
  SIZE 800 650
  STATUS ON

        CONFIG "MS_ERRORFILE" stderr
        DEBUG 5

  UNITS meters
  
  INCLUDE "../../mapping_globals.map"
  
   WEB
    METADATA
      'ows_title'           'M.R.C. Coaticook'
      'ows_srs'             'EPSG:26915 EPSG:900913 EPSG:32188 EPSG:4326'
    END
  END
  
  LEGEND
    LABEL
      TYPE TRUETYPE
      FONT vera_sans
      SIZE 8
      COLOR 0 0 0
     END
  END
  
        LAYER
    NAME 'ma_nad83'
    DATA '../440_MRC_Coaticook/44037_Coaticook/unite_eval.shp'
    STATUS ON
    TYPE ANNOTATION
        
        LABELITEM 'MA_NAD83'
        LABELCACHE ON
        
        CLASS
                NAME 'Matricule'
                EXPRESSION ([AREA] >= 1)
                MAXSCALEDENOM 5008
                MINSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION UC
                        FORCE true
                        ANTIALIAS true
                END #label
        END #class
        CLASS
                EXPRESSION ([AREA] < 1)
                MAXSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION UC
                        FORCE true
                        ANTIALIAS true
                END #label
        END #class
END #layer


LAYER
    NAME 'superficie'
    DATA '../440_MRC_Coaticook/44037_Coaticook/unite_eval.shp'
    STATUS ON
    TYPE ANNOTATION

        LABELITEM 'SUP'
        
        CLASS
                NAME 'Superficie' 
                EXPRESSION ([AREA] >= 1)
                MAXSCALEDENOM 5008
                MINSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION CC
                        FORCE true
                        OFFSET 0 5
                        ANTIALIAS true
                END #label
        END #class
        CLASS
                EXPRESSION ([AREA] < 1)
                MAXSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION UC
                        FORCE true
                        ANTIALIAS true
                END #label
        END #class
        TRANSPARENCY 100
END #superficie

LAYER
    NAME 'No_lot'
    DATA '../440_MRC_Coaticook/44037_Coaticook/unite_eval.shp'
    STATUS ON
    TYPE ANNOTATION

        LABELITEM 'NO_LOT'

        CLASS
                NAME 'Numéro de lot' 
                EXPRESSION ([AREA] >= 1)
                MAXSCALEDENOM 5008
                MINSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION CC
                        FORCE true
                        OFFSET 0 -17
                        ANTIALIAS true
                END #label
        END #class
        CLASS
                EXPRESSION ([AREA] < 1)
                MAXSCALEDENOM 1008
                LABEL
                        FONT vera_sans
                        TYPE TRUETYPE
                        SIZE 8
                        COLOR 0 0 0
                        POSITION UC
                        FORCE true
                        ANTIALIAS true
                END #label
        END #class
        TRANSPARENCY 100
END #no_lot
        
END #map



OGRINFO on my shapefile
--------

grinfo unite_eval.shp -so unite_eval
INFO: Open of `unite_eval.shp'
      using driver `ESRI Shapefile' successful.

Layer name: unite_eval
Geometry: Polygon
Feature Count: 3761
Extent: (192047.087702, 4986264.383000) - (212561.941000, 5003229.285008)
Layer SRS WKT:
PROJCS["NAD_1983_MTM_7",
    GEOGCS["GCS_North_American_1983",
        DATUM["North_American_Datum_1983",
            SPHEROID["GRS_1980",6378137.0,298.257222101]],
        PRIMEM["Greenwich",0.0],
        UNIT["Degree",0.0174532925199433]],
    PROJECTION["Transverse_Mercator"],
    PARAMETER["False_Easting",304800.0],
    PARAMETER["False_Northing",0.0],
    PARAMETER["Central_Meridian",-70.5],
    PARAMETER["Scale_Factor",0.9999],
    PARAMETER["Latitude_Of_Origin",0.0],
    UNIT["Meter",1.0]]
ID: Real (11.0)
MATRICULE: String (16.0)
X_COORD: Real (18.5)
Y_COORD: Real (18.5)
NO_LOT: String (30.0)
ECHELLE: String (15.0)
MA_NAD83: String (10.0)
SOURCE: String (50.0)
ANGLELOT: Real (10.2)
ANGLE_MANU: String (1.0)
VERIF: String (10.0)
PROB_SUP: String (10.0)
PROB_NOLOT: String (10.0)
LEGVERIF: String (10.0)
MA_NAD27: String (16.0)
PSC_INDEX: Integer (7.0)
SUP: String (16.0)
X_COORD_1: Real (18.5)
Y_COORD_1: Real (18.5)
PSC_INDE_1: Integer (7.0)
AREA: Real (16.3)
PERIMETER: Real (16.3)
ACRES: Real (16.3)
HECTARES: Real (19.11)
X_COORD_12: Real (18.5)
Y_COORD_12: Real (18.5)
PSC_INDE_2: Integer (7.0)
FRONT: Real (16.2)
SUPERF_N: Real (16.1)
U_M_SUP: String (2.0)
U_M_FR: String (2.0)
MA_10_27: String (16.0)
MA_10_83: String (16.0)
PSC_INDE_3: Integer (7.0)
DATE: Date (10.0)
FEUILLET: String (50.0)
C1_NAD83: String (4.0)
C2_NAD83: String (7.0)
PSC_INDE_4: Integer (7.0)


-----
-----------------------------
Marc-André Dion
B.Sc Géomatique appliquée
Université de Sherbrooke
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