Virtual Tables

[Brent Fraser]

MessageKevin,
  Try putting the full path to the mapsonline.csv between the <SrcLayer> tags.

Brent Fraser
GeoAnalytic Inc.
Calgary, Alberta
  ----- Original Message ----- 
  From: Kevin Flanders 
  To: MAPSERVER-USERS at LISTS.UMN.EDU 
  Sent: Wednesday, April 18, 2007 12:09 PM
  Subject: Re: [UMN_MAPSERVER-USERS] Virtual Tables


  I am using a chameleon app.and getting the following error:

   

  "Error rendering map image:

  A fatal error occurred drawing the map"

   

  I did try setting the STATUS to default with no change.

   

   

  Kevin

   

   

  From: Fawcett, David [mailto:David.Fawcett at state.mn.us] 
  Sent: Wednesday, April 18, 2007 2:04 PM
  To: Kevin Flanders; MAPSERVER-USERS at lists.umn.edu
  Subject: RE: [UMN_MAPSERVER-USERS] Virtual Tables

   

  How is it failing?  

   

  Are you getting an error message? 

   

  Are you specifically calling the layer by name in the URL or post request, or have you tried setting STATUS to DEFAULT?

   

  David.

    -----Original Message-----
    From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On Behalf Of Kevin Flanders
    Sent: Wednesday, April 18, 2007 12:41 PM
    To: MAPSERVER-USERS at LISTS.UMN.EDU
    Subject: [UMN_MAPSERVER-USERS] Virtual Tables

    I would like to map a virtual table, and I am told I can do it without declaring an ODBC.using the following mapfile layer definition:

     

      LAYER

        NAME "Fire Data"

        GROUP "Fire Data"

        STATUS on

        TYPE point

        CONNECTIONTYPE OGR

        CONNECTION "<OGRVRTDataSource>

                                         <OGRVRTLayer  name='firegis'>                                          

                                           <SrcLayer>mapsonline.csv</SrcLayer>                                    

                                           <GeometryField encoding='PointFromColumns' x='XCOORD' y='YCOORD'/>            

                                           <GeometryType>wkbPoint</GeometryType>

                                         </OGRVRTLayer>

                                       </OGRVRTDataSource>"

        TEMPLATE "ttt"

        TOLERANCE 4

        CLASS

          NAME "Fire Data"                                                                

          SYMBOL "circle"

          OUTLINECOLOR 80 80 80

          COLOR 219 0 0

          SIZE 12

        END

      END

     

     

    But this fails.  Do I need an ODBC..or is it true I can access a text file directly in this manner.  The data is being placed with all my other shapefiles (ie. in the same folder).

     

    Also, can the .csv file just as easily be a .txt file..and can the entries have quotations around them?

     

     

    Kevin 

     
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