[Mapserver-users] Generating dynamic point layer

François-Xavier Prunayre fx.prunayre at oieau.fr
Wed May 12 05:47:23 EDT 2004


>    I have an access table with the georeferencing positions (X, Y).
> Could anybody please help me by sending some code to generate a point
> layer dynamically from these information. Thanks for previous helps I
> got from the group.

You could do that using OGR virtual layer; Wiki page is
http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?VirtualSpatialData.

Set DSN in odbc connection; for exemple French,
then Ovf file look like this :
<OGRVRTDataSource>
    <OGRVRTLayer name="STATIONS">
        <SrcDataSource>ODBC:French,STATIONS</SrcDataSource>
     	<SrcLayer>STATIONS</SrcLayer>
    	<GeometryType>wkbPoint</GeometryType>
    	<LayerSRS></LayerSRS>
                 <GeometryField encoding="PointFromColumns"
x="X_LAMBERT_II_ET" y="Y_LAMBERT_II_ET"/>
 </OGRVRTLayer>
</OGRVRTDataSource>
where X_LAMBERT_II_ET is X coordinates and Y_LAMBERT_II_ET is Y.

Map file layer tag is :
LAYER
    NAME OVF
    TYPE POINT
    CONNECTIONTYPE OGR
    CONNECTION "french.ovf"
    DATA "STATIONS" # the name of the OGRVrtLayer
    STATUS DEFAULT
    PROJECTION
      "init=epsg:27582"
    END
  DUMP TRUE
	CLASS
    		TEMPLATE "ttt_query.html"
    		SYMBOL "circle"
    		SIZE 6
    		NAME "STATION_FR"
    		OUTLINECOLOR 239 16 16
	END
END

You could also use Mapscript.

HTH
Francois

----- Original Message ----- 
From: "Sam Choudry" <samuzzal at linux.net>
To: <mapserver-users at lists.gis.umn.edu>
Sent: Wednesday, May 12, 2004 9:27 AM
Subject: [Mapserver-users] Generating dynamic point layer


> Hello group,
>
>
>                                               Samuzzal
>
>
>
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-- 
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Les donnees et renseignements contenus dans ce message sont personnels, confidentiels et prives. Toute publication, utilisation ou diffusion, meme partielle, doit etre autorisee.

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