[mapserver-users] RE: Images returning blank

[Kent Morrison]

One thing I tried was to use the ogr2ogr tool to convert the files so they use the same projection.  I need to create an srs def ... any sites with examples or tutorials suggested?

The other alternative is to figure out how to create a PROJECTION element in the map file to match the shp file.  which I am also trying to learn.

thanks,

Kent



________________________________
From: Fawcett, David (MPCA) [mailto:David.Fawcett at state.mn.us]
Sent: Tuesday, January 19, 2010 4:22 PM
To: Kent Morrison; 'mapserver-users at lists.osgeo.org'
Subject: RE: Images returning blank

I think that this is pretty obviously your problem.

Before you can transform between spatial reference systems (SRS), you need to know what the original SRS is.  To create VE image tiles, it needs to transform to 'Web Mercator'.  It can't do that if you don't correctly identify the SRS of your layer.

I believe that your lat/lon layer works because it is inheriting the projection from the MAP.  For your 'something else' layer, you will need to define the correct projection for that layer.

David.

From: Kent Morrison [mailto:KMorrison at advantrack.com]
Sent: Tuesday, January 19, 2010 4:15 PM
To: Fawcett, David (MPCA); 'mapserver-users at lists.osgeo.org'
Subject: RE: Images returning blank


The Extents on the working file are in lat/lon. In the non-working file it looks to be in something else.

I'm trying to return VE image tiles..


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