[Chameleon] Dynamic SLD and TextSymbolizer

[Pascoe,Tim [Burlington]]

	I've been working on a way to incorporate a dynamically generated SLD, which I am using to provide custom filter capabilities on a point layer. I've managed to get a simple widget developed which passes a form variable to the SLD script file, permitting a dynamic filter value to be passed. It works great, but now I'm having trouble getting the TextSymbolizer in the SLD to correctly format the labels.

	The TextSymbolizer will change the color of the labels, but not the font or the point size - the font is installed with Mapserver in the correct directory. The map file layer, and appropriate SLD script is below.

Thanks for any suggestions - I'm sure I'm missing something simple......

Here is the extract of the TextSymbolizer script:

$strScriptOut = $strScriptOut . "				<TextSymbolizer>";
$strScriptOut = $strScriptOut . "				  <Geometry>";
$strScriptOut = $strScriptOut . "				    <PropertyName>site</PropertyName>";
$strScriptOut = $strScriptOut . "				  </Geometry>";
$strScriptOut = $strScriptOut . "				  <Label>site</Label>";
$strScriptOut = $strScriptOut . "				  <Font>";
$strScriptOut = $strScriptOut . "				    <CssParameter name='font-family'>vera</CssParameter>";
$strScriptOut = $strScriptOut . "				    <CssParameter name='font-style'>normal</CssParameter>";
$strScriptOut = $strScriptOut . "				    <CssParameter name='font-weight'>normal</CssParameter>";
$strScriptOut = $strScriptOut . "				    <CssParameter name='font-size'>8</CssParameter>";
$strScriptOut = $strScriptOut . "				  </Font>";
$strScriptOut = $strScriptOut . "				  <Fill>";
$strScriptOut = $strScriptOut . "				    <CssParameter name='fill'>#000000</CssParameter>";
$strScriptOut = $strScriptOut . "				  </Fill>";
$strScriptOut = $strScriptOut . "				  <LabelPlacement>";
$strScriptOut = $strScriptOut . "				    <PointPlacement>";
$strScriptOut = $strScriptOut . "				      <AnchorPoint>";
$strScriptOut = $strScriptOut . "				        <AnchorPointX>0.5</AnchorPointX>";
$strScriptOut = $strScriptOut . "				        <AnchorPointY>0.5</AnchorPointY>";
$strScriptOut = $strScriptOut . "				      </AnchorPoint>";
$strScriptOut = $strScriptOut . "				      <Displacement>";
$strScriptOut = $strScriptOut . "				        <DisplacementX>20</DisplacementX>";
$strScriptOut = $strScriptOut . "				        <DisplacementY>10</DisplacementY>";
$strScriptOut = $strScriptOut . "				      </Displacement>";
$strScriptOut = $strScriptOut . "				      <Rotation>20</Rotation>";
$strScriptOut = $strScriptOut . "				    </PointPlacement>";
$strScriptOut = $strScriptOut . "			      </LabelPlacement>";
$strScriptOut = $strScriptOut . "				  <Halo />";
$strScriptOut = $strScriptOut . "			    </TextSymbolizer>";


Here is the Mapfile layer:

  LAYER
    NAME "CABINPoints"
    GROUP "Sample Points"
    STATUS ON
    TYPE RASTER
    TOLERANCE 5
    TOLERANCEUNITS PIXELS
    TEMPLATE "tt.html"
    CONNECTIONTYPE WMS
    CONNECTION "http://localhost/scripts/mapserv.exe?map=C:/Documents%20and%20Settings/TimP/My%20Documents/CABIN/Maps/map/pointswms.map"
    METADATA
	  "wms_onlineresource" "http://localhost/scripts/mapserv.exe?"
	  "wms_sld_url" ""
        "wms_title" "CABIN Points test layer"
        "wms_abstract" "Test Access to CABIN SQL-Server Database on ECBURAS1"
        "wms_srs" "EPSG:42304"
        "wms_name" "CABINPoints"  # Eventually change this to the name of the Project being mapped??
        "wms_formatlist" "image/png,image/gif,image/jpeg,image/wbmp"
        "wms_format" "image/png"
        "selected" "0"
        "wms_server_version" "1.1.1"
        "wms_title" "Site Location"
    END
    LABELITEM "site"
    CLASS
	name 'CABINPoints'
	LABEL
	  COLOR 0 0 0
        TYPE TRUETYPE
        FONT fritqat
        SIZE 8
        POSITION LR
	END
    END
    PROJECTION
      "init=epsg:4326"
    END
    DUMP TRUE
  END

Timothy Pascoe

Environment Canada / Environnement Canada
Canada Centre for Inland Waters / Centre Canadien des Eaux Intérieures
867 Lakeshore Road / 867, chemin Lakeshore
Burlington, Ontario / Burlington (Ontario)
L7R 4A6

Tel/Tél: (905) 336-6239
Fax/Téléc: (905) 336-4699
E-mail/C. élec: tim.pascoe at ec.gc.ca
Government of Canada/Gouvernement du Canada

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