[Mapserver-users] OGR unable to access datasource

[Julien, Heryk]

Hi,
I have the same problem and error message with Access2000.
Take a look at the following bugzilla bug:
http://bugzilla.remotesensing.org/show_bug.cgi?id=471
and the mapserver user discussion forum with the following key word:
VirtualSpatialData (OGR Connectiontype).

Good luck

-----Message d'origine-----
De : Van Ulden, Joost [mailto:jvanulde at nrcan.gc.ca]

Envoyé : Wednesday, January 28, 2004 7:07 PM
À : Mapserver-Users at Lists. Gis. Umn. Edu
(mapserver-users at lists.gis.umn.edu)
Objet : [Mapserver-users] OGR unable to access datasource


Hi all, some talk of connecting to a datasource through OGR got me excited.
I am trying to connect to a Microsoft SQL Server database called
geosemantica.  My points are in a table called Desc_story and the coordinate
fields are story_x and story_y.  I have set up a system DSN and tested the
connection.  It checks out find.  Anyone have an idea as to what I am doing
wrong?

Everytime I try to render the map I get the following error (the file is
definitely there):

  msDrawMap(): Image handling error. Failed to draw layer named 'OGRPoints'.

  msOGRFileOpen(): OGR error. Open failed for OGR connection
`c:\inetpub\wwwroot\MS_DEMO\ogr.ovf'. File not found or unsupported format. 

Here is my layer:

  LAYER
    NAME OGRPoints
    TYPE POINT
    CONNECTIONTYPE OGR
    CONNECTION "c:\inetpub\wwwroot\MS_DEMO\ogr.ovf"
    DATA "Desc_story"
    STATUS default
    CLASS
      COLOR 255 0 0
    END
  END

Contents of ogr.ovt:

  <OGRVRTDataSource>

      <OGRVRTLayer name="Desc_story">
          <SrcDataSource>ODBC:foo/foo at geosemantica</SrcDataSource> 
 	  <SrcLayer>Desc_story</SrcLayer> 
	  <GeometryType>wkbPoint</GeometryType> 
          <LayerSRS>WGS84</LayerSRS>
	  <GeometryField encoding="PointFromColumns" x="Desc_story.story_x"
y="Desc_story.story_y"/> 
      </OGRVRTLayer>

  </OGRVRTDataSource>

Thank you in advance.

============================================
Joost van Ulden
Programmer/Analyst
Natural Resources Canada / Ressources naturelles Canada
Geological Survey of Canada / Commission geologique du Canada
101 - 605 Robson Street / 101 - 605 rue Robson
Vancouver, B.C. / Vancouver (C.-B.)
V6B 5J3
Office/Bureau:  604.666.7525
fax/telecopieur: 604.666.1124
jvanulde at nrcan.gc.ca
============================================
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