Virtual Tables

[Fawcett, David]

I would simplify it down for testing purposes.  
 
If you don't already have it, download FWTools and use shp2img against
your mapfile to see if you can get it to draw.  
 
To narrow it even further, I would start by  running ogrinfo against
your virtual datasource to see if you can get data out of it.  
 
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 1:09 PM
	To: MAPSERVER-USERS at LISTS.UMN.EDU
	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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