[maplab-users] projection questions.

[woodbri@swoodbridge.com]

Yup and that sounds like a problem with map-lab, not mapserver. I'm 
sure they will have some additional input on this.

-Steve

On 28 Aug 2002 at 14:31, Tweedy, Scott wrote:

> That's pretty much what I thought.  The raster layer I have is already in
> the projection that I defined in the first PROJECTION....END section.  When
> I don't define a PROJECTION...END section for the layer though it gives me a
> different error and won't display the map.
> 
> -----Original Message-----
> From: woodbri@swoodbridge.com [mailto:woodbri@swoodbridge.com]
> Sent: Wednesday, August 28, 2002 2:29 PM
> To: Tweedy, Scott; MapLab Users (E-mail)
> Subject: Re: [maplab-users] projection questions.
> 
> 
> Scott,
> 
> I can't speak for the maplab specific pieces of your question, but in 
> general the way Mapser works is:
> 
> 1) the PROJECTION ... END section associated with the MAP object is 
> used as the OUTPUT projection. It has the side effect of causing all 
> layers that do NOT have a PROJECT ... END block defined in them to be 
> assumed to be in the OUTPUT projection space.
> 
> 2) For each layer, that is NOT already in the OUTPUT projection, you 
> need to define what the layer's data is currently in.
> 
> 3) If you are planning on reprojecting a raster layer on the fly 
> (this is proably not a good thing to do), I think you want to do this 
> using GDAL
> 
> 4) It is better to reproject the raster and save it in the OUTPUT 
> project format if you need to do this.
> 
> Hope this help's, I'll let the maplab developers address the rest of 
> your questions/bugs and correct me if I got this part wrong :)
> 
> -Steve
> 
> On 28 Aug 2002 at 13:55, Tweedy, Scott wrote:
> 
> > I have a couple of questions about projections in MapLab.  I have a few
> > layers that are originally in different projections.  When I create a map
> > file with one layer everything seems to be OK.  When I add another layer
> > that's in a different projection as the first I get the following error:
> > 
> > Fatal error: MapServer Error in msProcessProjection(): projection not
> named
> > in E:\maplab-beta6\common\wrapper\map_session.php on line 721
> > 
> > Once I get that error one time it persists until I close Netscape and
> > restart MapLab.
> > 
> > I also have a question about background layers.  I have a TIFF file with a
> > .tfw world file, so technically, it has coordinates associated with it,
> but
> > isn't georeferenced.  The coordinates that are associated with it match a
> > Lambert projection.  I have a layer in UTM that I want to overlay on top
> of
> > that raster.  Is there a way of defining a projection for the map, but not
> > for that particular raster layer?  Everything I've tried so far hasn't
> > worked.
> > 
> > Thanks in advance,
> > st
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> > 
> 
>