[Mapserver-users] Virtual Spatial Data - projection

David Fawcett David.Fawcett at state.mn.us
Wed Jun 2 12:01:00 EDT 2004


I believe that you have your X and Y values switched.  Shouldn't Chicago be 41.5 deg Latitude, which would be your Y value for that record?

David J. Fawcett
MN Office of Environmental Assistance

>>> "Jenu Abraham" <jenu_ab at hotmail.com> 6/2/2004 10:48:49 AM >>>
still no points showing up on the map....
this is how my table looks now

table: latlong

x             |        y
-------------------------------
41.5         |     -87.5
------------------------------
35.5         |     -97.4
---------------------------------

------------------------------------------------------------------------------------------------------------
>From: "Pagurek, Debbie" <PAGUREKD at AGR.GC.CA>
>To: "Jenu Abraham" <jenu_ab at hotmail.com>, 
><mapserver-users at lists.gis.umn.edu>
>Subject: RE: [Mapserver-users] Virtual Spatial Data - projection
>Date: Wed, 2 Jun 2004 10:06:54 -0400
>
>
>You have the negative in the wrong place.
>e.g. Chicago should be 41.5  -87.2
>
>Debbie
>
>-----Original Message-----
>From: mapserver-users-admin at lists.gis.umn.edu 
>[mailto:mapserver-users-admin at lists.gis.umn.edu] On Behalf Of Jenu
>Abraham
>Sent: Tuesday, June 01, 2004 4:12 PM
>To: mapserver-users at lists.gis.umn.edu 
>Subject: [Mapserver-users] Virtual Spatial Data - projection
>
>guys...
>i have been trying to plot points on a US map using latlong cordinates
>from
>my SQL table using virtual spatial data
>ogrinfo gave the correct output..with testing2.ovf
>
>eg:  -35.5 97.4 oklahomaq city
>       -41.5 87.2 chicago
>i can see the states layer but
>i dont see any points on my map..from the truck layer
>why? is something wrong in the projection
>
>------------------------
>MAP
>   NAME           e-test-rd-jbox-vsd_
>   IMAGETYPE      GIF
>   EXTENT          -2236857.50 -1744057.00  2786329.50 29069.36
>   SIZE           800 600
>   SHAPEPATH      "C:\cgi-bin\data\"
>   FONTSET        "C:\cgi-bin\fonts\fonts.list"
>   WEB
>     TEMPLATE 'e-test-rd-jbox.html'
>     IMAGEPATH 'C:\cgi-bin\tmp\'
>     IMAGEURL  '/tmp/'
>   END
>
>   PROJECTION
>     "init=epsg:2163"
>    END
>
>
>   LAYER # States polygon layer begins here
>     NAME         states
>     DATA         statesp020
>     STATUS       DEFAULT
>     TYPE         POLYGON
>     PROJECTION
>       "init=epsg:4326"
>     END
>     CLASS
>         COLOR      240 240 100
>     END
>   END # States polygon layer ends here
>
>
>LAYER # start of truck position from database
>
>	NAME trucks
>	TYPE POINT
>	CONNECTIONTYPE OGR
>	CONNECTION "testing2.ovf"
>	DATA "mylayer"
>	STATUS DEFAULT
>
>	PROJECTION
>       	  "proj=latlong"
>	END
>	CLASS
>		SYMBOL 1
>		SIZE 6
>      		COLOR      255 0 0
>	END
>END # end of connection layer
># End of LAYER DEFINITIONS
>END # end of map file
>

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