difficulity displaying GRASS rasters

Stephan Holl holl at GDF-HANNOVER.DE
Mon Jul 10 02:31:03 EDT 2006


Hello Kurt, 

On Fri, 7 Jul 2006 09:19:01 -0600 Kurt Menke <kmenke at EDAC.UNM.EDU>
wrote:

> Hello,
> 
> I have a Mapserver client which is trying to access a GRASS raster
> but I get the following error message: .Unrecognized or unsupported
> image format drawEPP(): Image handling error.
> /var/www/cgi-bin/vc/valles/modis/PERMANENT/cellhd/MT3VG_2006_186_1521_250m_N
> DVI.rc is not an EPPL file.
> 
> 
> The grass database is on a different server but the database location
> is set up as a share so that it appears to be a local drive on the
> server running Mapserver and the client.  I've tried putting a
> shapefile in the same shared drive and Mapserver can read that.
> Permissions are open on the data.  Any ideas on why I may be getting
> this error would be greatly appreciated. Machine details are below.

Have you tried using gdalinfo on your server using the GRASS-dataset?

e.g.
gdalinfo /var/www/cgi-bin/vc/valles/modis/PERMANENT/cellhd/MT3VG_2006_186_1521_250m_NDVI.rc
 
It seems that your GDAL on your server-maschine does not understand the
GRASS 6 format, but I may be wrong.

[...]
 
> GRASS 6.0.1
> 
> GDAL 1.2.5 - supported formats output
> 
>             Supported Formats:
> 
[...]

>   GRASS (ro): GRASS Database Rasters

this seems to be the old libgrass-driver?! Perhaps someone more
knowlegdable can comment on this?

> GRASS machine:
> 
> RHEL 3.0
> 
> GRASS 6.0.1
> 
> GDAL-Grass 1.3.1
> 
> GDAL 1.3.1 - supported formats output:
> 
> Supported Formats:
> 
>   GRASS (ro): GRASS Database Rasters (5.7+)

this seems to be the correct GRASS-driver.

[...]

Best
	Stephan

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