USGS DEM in mapserver {Scanned}

[Siki Zoltan]

Hi Pietro,

I have not reprojected gtopo30 layers yet. But AFAIK gtopo files30 are 
georeferenced in lat/lon, in my case I have .dmw .hdr and .prj files 
All of them describe projection in different formats.
If you would like to see your layer in another 
projection than you should use PROJECTION object for MAP and LAYER to 
force Mapserver to reproject your data on the fly.

Bye
Zoltan

On Thu, 25 Jan 2007, Pietro Giannini wrote:

> 
> 
> Thanks Zoltan!
> 
> I tried immediately and it work well ... but MS
> does not reproject the raster!
> The only way to display correctly the
> raster is apply a lat/lon projection to the map, the same of the
> raster.
> 
> In the same directory  of the .dem is a world
> file, with the same name of the Gtopo tile and extension ".wld",
> I tried also to rename the world file to ".dmw", without
> result.
> 
> I used .tif rasters, georeferenced with world files,
> and MS reproject them without problem.
> 
> Another way to
> georeference .dem rasters?
> Anyone can help?
> 
> thanks, bye
> .....................................pg
> 
> -------------------------- Messaggio originale
> ---------------------------
> Oggetto: Re: [UMN_MAPSERVER-USERS] USGS
> DEM in mapserver {Scanned}
> Da:      "Siki Zoltan"
> <siki at AGT.BME.HU>
> Data:    Gio, 25 Gennaio 2007 2:52 pm
> A:
>       MAPSERVER-USERS at LISTS.UMN.EDU
> --------------------------------------------------------------------------
> 
> Hi Pietro,
> 
> I'm using Gtopo data. Simpli add a layer to
> your map file.
> AFAIK gdal can read it, it may depend on gdal
> version.
> My layer definition looks like:
> 
> LAYER
> 	NAME
> "e020n90"
> 	DATA "e020n90.dem"
> 	TYPE
> RASTER
> 	STATUS DEFAULT
> 	CLASSITEM '[pixel]'
> 	CLASS
> 		NAME "Nodata"
> 		EXPRESSION ([pixel] < 1)
> 		COLOR 0 0 255
> 	END
> 	CLASS
> 		NAME "0 - 50
> m"
> 		EXPRESSION ([pixel] >= 1 AND [pixel] < 50)
> 		COLOR 0 119 32
> 	END
>    ...
> END #of layer
> 
> Bye
> Zoltan 
> 
> On Thu, 25 Jan 2007, Pietro Giannini
> wrote:
> 
> > 
> > 
> > Hi list,
> > Is anyone
> experienced about the USGS gTopo30 dataset
> > and his use with
> mapserver?
> > This dataset contain a binary elevation
> >
> raster (.dem) in
> > 16 bit signed integer.
> > 
> >
> Data is here:
> >
> (http://edc.usgs.gov/products/elevation/gtopo30/gtopo30.html)
> >
> 
> > thank for any hint
> > 
> > pg
> > 
> >
> 
> 
> 
>