[Mapserver-users] Re: VirtualSpatialData (OGR Connectiontype)

Normand Savard nsavard at dmsolutions.ca
Thu Jan 22 10:16:50 PST 2004 

Julien,

Try 

 LABELITEM  MGWI_TBLLOC #may need to use table.name or just name depending on your OVF file.

in the map file, in the virtual layer section.


Example of a map file:

...
  LAYER
    NAME "MyVirtualLayer"
    TYPE POINT
    CONNECTIONTYPE OGR
    CONNECTION "virtual.ovf" # the name and path to the virtual.ovf file, relative to shapepath may work?
    DATA "capitalNames" # the name of the OGRVrtLayer
    STATUS ON
    LABELITEM capitalName #may need to use table.name or just name depending on your OVF file.
    PROJECTION
      "init=epsg:4326"
    END
    CLASS
      SYMBOL star
      SIZE 10
      COLOR 255 0 0
      LABEL
	SIZE MEDIUM
	TYPE BITMAP
	COLOR 0 0 0
      END
    END
END # Layer

...

Example of an "ovf" file

<OGRVRTDataSource>

    <OGRVRTLayer name="capitalNames">
        <SrcDataSource>ODBC:NormMyDSN,capital</SrcDataSource>
     <SrcLayer>capital</SrcLayer>
    <GeometryType>wkbPoint</GeometryType>
        <LayerSRS>WGS84</LayerSRS>
    <GeometryField encoding="PointFromColumns" x="XCoord" y="YCoord"/>
    </OGRVRTLayer>

</OGRVRTDataSource>



Norm

Julien, Heryk wrote:

>Hi to all,
>
>I replaced my version of Mapserver with a precompiled one. I also installed
>the latest  version of gdal11.dll and ogrinfo from the OpenEV_FW zip.
>
>As suggested by Frank Warmerdam I used the following SrcDataSource tag in
>the virtual file:
><SrcDataSource>ODBC:MGWI_MAPSERVER</SrcDataSource>. MGWI_MAPSERVER is the
>DSN for my ODBC data source.
>
>Here is the orginfo output:
>
>D:\WebScripts\MapServer>ogrinfo --formats
>Loaded OGR Format Drivers:
>  -> "ESRI Shapefile" (read/write)
>  -> "UK .NTF" (readonly)
>  -> "SDTS" (readonly)
>  -> "TIGER" (read/write)
>  -> "S57" (read/write)
>  -> "MapInfo File" (read/write)
>  -> "DGN" (read/write)
>  -> "VRT" (readonly)
>  -> "AVCBin" (readonly)
>  -> "REC" (readonly)
>  -> "Memory" (read/write)
>  -> "GML" (read/write)
>  -> "ODBC" (read/write)
>  -> "OGDI" (readonly)
>  -> "FMEObjects Gateway" (readonly)
>
>D:\WebScripts\MapServer>ogrinfo
>D:\webCGCq\lcnp\mapserver_demo\maritimes\data\shp\geo83\mgwi.ovf
>ERROR 4: Update access not supported for VRT datasources.
>Had to open data source read-only.
>INFO: Open of
>`D:\webCGCq\lcnp\mapserver_demo\maritimes\data\shp\geo83\mgwi.ovf'
>using driver `VRT' successful.
>1: MGWI_TBLLOC (Point)
>
>When I execute Mapserver I got the following message:
>msDrawMap(): Image handling error. Failed to draw layer named 'MGWI_TBLLOC'.
>
>msOGRFileOpen(): OGR error. Open failed for OGR connection `mgwi.ovf'. File
>not found or unsupported format. 
>
>
>
>Thanks for the help
>
>Héryk
>
>
>
>-----Message d'origine-----
>De : Normand Savard [mailto:nsavard at dmsolutions.ca]
>Envoyé : Wednesday, January 21, 2004 5:26 PM
>À : Julien, Heryk
>Cc : 'spencer at dmsolutions.ca'; 'Mapserver-users at lists.gis.umn.edu';
>Anctil, Martin
>Objet : Re: [Mapserver-users] Re: VirtualSpatialData (OGR
>Connectiontype)
>
>
>Julien,
>
>Just because I do not know all the steps you have done, can you tell me 
>if you were able to have some output form "ogrinfo" command?
>
>Norm
>
>Julien, Heryk wrote:
>
>  
>
>>Hi Paul,
>>What do I write in the virtual file SrcDataSource tag when I log on a
>>    
>>
>Access
>  
>
>>db with no user restrictions and pass word?
>>I've tried the following combinations without success:
>>
>><SrcDataSource>ODBC:MGWI_MAPSERVER</SrcDataSource>
>><SrcDataSource>ODBC:@MGWI_MAPSERVER</SrcDataSource>
>><SrcDataSource>ODBC:/@MGWI_MAPSERVER</SrcDataSource>
>><SrcDataSource>ODBC:administor/@MGWI_MAPSERVER</SrcDataSource> 
>><SrcDataSource>ODBC:administeur/@MGWI_MAPSERVER</SrcDataSource>
>>
>>Thanks
>>Héryk
>>
>>
>>-----Message d'origine-----
>>De : Paul Spencer [mailto:pagameba at magma.ca]
>>Envoyé : Wednesday, January 21, 2004 1:43 PM
>>À : Julien, Heryk
>>Cc : 'spencer at dmsolutions.ca'; 'Mapserver-users at lists.gis.umn.edu';
>>Anctil, Martin
>>Objet : [Mapserver-users] Re: VirtualSpatialData (OGR Connectiontype)
>>
>>
>>I believe there is a limitation in the OGR OBDC connection that requires 
>>that you provide a user name and password in the OVF file (I think that 
>>is mentioned in the wiki also).
>>
>>Cheers,
>>
>>Paul
>>
>>Julien, Heryk wrote:
>> 
>>
>>    
>>
>>>Hi,
>>>I'm trying out the Virtual Spatial Data procedure in MapServerWiki
>>>(http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?VirtualSpatialData) with IIS
>>>and an Access 2000 ODBC connection.
>>>
>>>I keep on getting the following error message when I attempt ton see my
>>>   
>>>
>>>      
>>>
>>map:
>> 
>>
>>    
>>
>>>msDrawMap(): Image handling error. Failed to draw layer named
>>>   
>>>
>>>      
>>>
>>'MGWI_TBLLOC'.
>> 
>>
>>    
>>
>>>msOGRFileOpen(): OGR error. Open failed for OGR connection `mgwi.ovf'.
>>>   
>>>
>>>      
>>>
>>File
>> 
>>
>>    
>>
>>>not found or unsupported format.
>>>
>>>Anyone can help me?
>>>
>>>
>>>
>>>Here is my virtual file (mgw.ovf):
>>>
>>><OGRVRTDataSource>
>>>   <OGRVRTLayer name="MGWI_TBLLOC">
>>>       <SrcDataSource>ODBC:MGWI_MAPSERVER</SrcDataSource> 
>>>	<SrcLayer>tblloc</SrcLayer> 
>>>	<GeometryType>wkbPoint</GeometryType>
>>>	<!-- LayerSRS>WGS84</LayerSRS !-->         
>>>	<GeometryField encoding="PointFromColumns" x="x" y="y"/> 
>>>   </OGRVRTLayer>
>>></OGRVRTDataSource>
>>>
>>>
>>>
>>>
>>>My virtual layer is in the same directory as my shapefiles:
>>>
>>>SHAPEPATH "d:\webcgcq\lcnp\mapserver_demo\maritimes\data\shp\geo83"
>>>
>>>
>>>
>>>
>>>Here is the section of my mapfile where I call my virtual layer:
>>>
>>>LAYER
>>>	NAME "MGWI_TBLLOC"
>>>	TYPE POINT
>>>	CONNECTIONTYPE OGR
>>>	CONNECTION "mgwi.ovf"
>>>	DATA "MGWI_TBLLOC"
>>>	STATUS DEFAULT
>>>	LABELITEM "LOCID"
>>>	PROJECTION
>>>		"init=epsg:26920"
>>>	END #projection
>>>	CLASS
>>>		SYMBOL 'circle'
>>>		SIZE 8
>>>		LABEL
>>>			COLOR 132 31 31
>>>			SHADOWCOLOR 218 218 218
>>>			SHADOWSIZE 2 2
>>>			TYPE TRUETYPE
>>>			FONT arial-bold
>>>			FORCE true
>>>			SIZE 10
>>>			POSITION auto
>>>			PARTIALS FALSE
>>>			MINDISTANCE 0
>>>			BUFFER 2
>>>		END # end of label
>>>	    TEMPLATE
>>>"d:\webcgcq\lcnp\mapserver_demo\maritimes\templates\field_capt_query.html"
>>>	END # CLASS
>>>END # LAYER
>>>
>>>
>>>
>>>
>>>
>>>
>>>==========================================
>>>Héryk
>>>NRCan
>>>
>>>-----Message d'origine-----
>>>De : Julien, Heryk [mailto:hjulien at nrcan.gc.ca]
>>>Envoyé : Wednesday, January 14, 2004 8:44 AM
>>>À : 'spencer at dmsolutions.ca'
>>>Cc : 'Mapserver-users at lists.gis.umn.edu'
>>>Objet : RE: TR: [Mapserver-users] MySQL and Mapserver
>>>
>>>
>>>Thanks
>>>
>>>Héryk
>>>
>>>-----Message d'origine-----
>>>De : Paul Spencer [mailto:pagameba at magma.ca]
>>>Envoyé : Tuesday, January 13, 2004 5:00 PM
>>>À : Julien, Heryk
>>>Cc : 'Paul Spencer '; 'Mapserver-users at lists.gis.umn.edu'
>>>Objet : Re: TR: [Mapserver-users] MySQL and Mapserver
>>>
>>>
>>>Maybe you missed it?
>>>
>>>
>>>   
>>>
>>>      
>>>
>>http://mapserver.gis.umn.edu/data2/wilma/mapserver-users/0401/msg00111.html
>> 
>>
>>    
>>
>>>Cheers,
>>>
>>>Paul
>>>
>>>Julien, Heryk wrote:
>>>
>>>
>>>   
>>>
>>>      
>>>
>>>>Hi Paul,
>>>>Could you send me or post information on the "new format in 
>>>>OGR to set up a virtual layer that can draw columns from any ODBC data 
>>>>source and map two of the columns to x and y locations"?
>>>>
>>>>Thanks
>>>>Héryk
>>>>
>>>>-----Message d'origine-----
>>>>De : Julien, Heryk [mailto:hjulien at nrcan.gc.ca]
>>>>Envoyé : Monday, January 05, 2004 9:23 AM
>>>>À : 'spencer at dmsolutions.ca'
>>>>Cc : 'Mapserver-users at lists.gis.umn.edu'
>>>>Objet : RE: [Mapserver-users] MySQL and Mapserver
>>>>
>>>>
>>>>Hi,
>>>>I am also very interseted in that fonction. I would like to be able to
>>>>        
>>>>
>map
>  
>
>>>>well positions from a database x and y colums. Would this permit me to
>>>>     
>>>>
>>>>        
>>>>
>>>have
>>>
>>>   
>>>
>>>      
>>>
>>>>an up to date point geometry layer which reflects the changes in my well
>>>>database? Can you send me more details?
>>>>
>>>>Thanks
>>>>
>>>>Héryk
>>>>NRCan
>>>>
>>>>-----Message d'origine-----
>>>>De : Paul Spencer [mailto:pagameba at magma.ca]
>>>>Envoyé : Saturday, January 03, 2004 4:28 PM
>>>>À : bartvde at xs4all.nl
>>>>Cc : mapserver-users at lists.gis.umn.edu
>>>>Objet : Re: [Mapserver-users] MySQL and Mapserver
>>>>
>>>>
>>>>Bart,
>>>>
>>>>if you are interested in point geometries only, there is a new format in 
>>>>OGR to set up a virtual layer that can draw columns from any ODBC data 
>>>>source and map two of the columns to x and y locations.  We've used it 
>>>>for a couple of clients and it works very nicely.  If you are interested 
>>>>I can send you more details.
>>>>
>>>>Cheers,
>>>>
>>>>Paul
>>>>
>>>>Bart van den Eijnden wrote:
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>        
>>>>
>>>>>Hi list,
>>>>>
>>>>>I see in the history log that there has been some work done recently 
>>>>>(early December) by Attila on supporting MySQL 4.X for the MyGIS 
>>>>>connector. Can it be used already?
>>>>>
>>>>>Also, is it possible to keep the geometries in shapefiles and use 
>>>>>Mapserver JOINS to link to tables in MySQL?
>>>>>
>>>>>Thanks in advance for the info.
>>>>>
>>>>>Best regards,
>>>>>Bart
>>>>>_______________________________________________
>>>>>Mapserver-users mailing list
>>>>>Mapserver-users at lists.gis.umn.edu
>>>>>http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
>>>>>
>>>>>       
>>>>>
>>>>>          
>>>>>
>>>>     
>>>>
>>>>        
>>>>
>> 
>>
>>    
>>
>
>
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