[mapserver-users] Preparing GeoTIFF files for use in Mapserver

[pcreso at pcreso.com]

Hi Robert,

Can you check to see that 2193 (NZTM2000) is included in the look-up table of projections used by GDAL?

If not, you might try fully describing the parameters in proj.4 syntax instead of using the EPSG notation, see:

http://spatialreference.org/ref/epsg/2193/

Cheers,

  Brent Wood




--- On Mon, 9/21/09, Robert Sanson <SansonR at asurequality.com> wrote:

> From: Robert Sanson <SansonR at asurequality.com>
> Subject: [mapserver-users] Preparing GeoTIFF files for use in Mapserver
> To: mapserver-users at lists.osgeo.org
> Date: Monday, September 21, 2009, 12:31 PM
> 
>  
>  
>  
> Hi 
>  
> I am trying to use gdal_translate to convert some
> image files (PNGs and JPEGs) into GeoTIFFs for using in
> Mapserver. I am using the gdal_translate utility. The
> problem I am having is getting the proper Projection
> information embedded. I want to assign EPSG:2193 (NZGD2000 /
> New Zealand Transverse Mercator 2000).
>  
> I have .jgw / .pgw worldfiles and ESRI .prj files for
> my input files.
>  
> When I try:
>  
> gdal_translate -of GTiff -co "TILED=YES"
> -a_srs "EPSG:2193" infile.jpg outfile.tif
>  
> then examine outfile.tif with gdalinfo, it
> shows:
>  
> PROJCS["unnamed",
>     GEOGCS[,
>        
> DATUM["unknown",
>            
> SPHEROID["unretrievable - using
> WGS84",6378137,298.257223563]],
>        
> PRIMEM["Greenwich",0],
>        
> UNIT["degree",0.0174532925199433]],
>     UNIT["metre",1,
>        
> AUTHORITY["EPSG","9001"]],
>    
> AUTHORITY["EPSG","2193"]]
>  
> It doesn't seem to be finding the correct EPSG
> reference. I have GDAL_DATA environment variable specified,
> and have also included it in my path. I am using the gdal
> utilities that came with ms4w.
>  
> Many thanks,
>  
> Robert Sanson
> 
> 
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