[gdal-dev] OGR and VPF

[Frank Warmerdam]

Christopher Barker wrote:
> Hi all,
> 
> Anyone know about OGR support for the "Vector Product Format"?
> 
> In particular, I'm looking to support the The Digital Nautical Charts 
> produced by the National Geospatial-Intelligence Agency:
> 
> http://www.nga.mil/portal/site/dnc/
> 
> They appear to be in the "Vector Product Format":
> 
> http://www.nga.mil/portal/site/nga01/index.jsp?epi-content=GENERIC&itemID=a2986591e1b3af00VgnVCMServer23727a95RCRD&beanID=1629630080&viewID=Article 
> 
> 
> (got to love those clean links!)
> 
> I don't see it listed at:
> http://www.gdal.org/ogr/ogr_formats.html
> 
> but some archived emails lead me to believe that maybe the OGDI Vectors 
> format was somehow related.
> 
> Does anyone know how to read these files?
> 
> If not supported in OGR, are there any other Open Source libs for 
> reading them (read only is fine).

Chris,

OGDI is indeed the key.  You need to build OGDI which is *another*
multiformat geospatial library, then build GDAL/OGR with OGDI support
and then you can read VPF.  For the DNC dataset I have locally I use
the following as the OGR datasource name to read it (via OGDI).

   gltp:/vrf/home/warmerda/dnc13/h1316010

FWTools comes built with OGDI support if you want to try some preliminary
experiments using it.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
light and sound - activate the windows | http://pobox.com/~warmerdam
and watch the world go round - Rush    | President OSGeo, http://osgeo.org