[Mapserver-users] reprojection, expressions, and query blues

[Frank Warmerdam]

Gustavo Alcides Concheiro Perez wrote:
> Newbie questions, I expect:
> 
> 1. I'm trying to reproject some shapefiles.  I set the projection for the 
> layers (lat/long) and the (different) projection for the map (like LAEA---I 
> tried several)  AFAIK the proj codes are correct, and I copied the tutorials 
> code as models.   NOTHING HAPPENS.  Layers are *not* reprojected but shown in 
> lat/long, and no error message pops anywhere, even when I use "DEBUG ON" on 
> layers.  I'm totally baffled.

Gustavo,

I don't know why this isn't working.  You might need to supply your .map file to
help us work it out.

> 2. Same thing with passing a expression in the URL.  Nothing happens; no error 
> message either.

I don't know anything about this.  I have never tried it.

> 3. I want the elevation for the query point.  This is very important.  I have 
> the DEMs (several), but I see no way to query a raster file with MapServer.

Raster query is not supported in 4.2, but it has been introduced in 4.3 (the
development version).   See the wiki for details on this or ask me.

   http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?RasterQuery

> 4. Is there a way to link tolerance (for mouseclicks on queries) to mapa units 
> (e.g. 10 km radius) instead of just pixels?

Yes, I think there is.  I don't recall the details though.

Hopefully you will get more detailed feedback from someone.

Best regards,
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