'[mapserver-users] Re: Problem with Class Expression'

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List:       mapserver-users
Subject:    [mapserver-users] Re: Problem with Class Expression
From:       Marc-AndrÃ©_D. <qc_mad () hotmail ! com>
Date:       2012-03-30 13:17:43
Message-ID: 1333113463154-4671294.post () n6 ! nabble ! com
[Download RAW message or body]

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 km ²) is >= 1 then the scale of the label will be
between 1008 and 5008
- if the AREA (area in km ²) 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
NumÃ©ro 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 'NumÃ©ro 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-AndrÃ© Dion
B.Sc GÃ©omatique appliquÃ©e
UniversitÃ© de Sherbrooke
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