[gdal-dev] [BULK] Re: Dissolve shapefile using GDAL/OGR

[Dan Strobridge]

Thanks Evan.  I will try the workaround and use it until GDAL 1.10 has been incorporated into OSGeo4W.

Since you’ve brought up the OSGeo4W installer… mine says my gdal library is current (1.9.2-2) bu when I launch the shell I see the following, which suggests an older version is actually getting loaded.  You don’t happen to know how to resolve this, do you?

OSGEO4W home is C:\OSGeo4W\

                   -={ OSGeo4W Shell Commands }=-
find: unable to access ".exe": The system cannot find the file specified.
find: unable to access ".bat": The system cannot find the file specified.

GDAL 1.7.3, released 2010/11/10


Thanks so much,
Dan



From: Even Rouault [via OSGeo.org] [mailto:ml-node+s1560n5067676h80 at n6.nabble.com]
Sent: Friday, July 19, 2013 2:01 PM
To: Strobridge, Daniel M.
Subject: [BULK] Re: Dissolve shapefile using GDAL/OGR

Le vendredi 19 juillet 2013 17:23:24, Dan Strobridge a écrit :

> I'm getting the same ST_Union error as Benicio but I know I have Spatialite
> (v.3.0.1-2), SQLite (3.7.10-2), and Geos (3.3.8-1) from my OSGeo4W install
> on Win7.  I also tried using the GUnion function, which appears to have
> been replaced by ST_Union at 3.0.0.  In fact, none of the  spatial
> operator functions
> <http://www.gaia-gis.it/spatialite-3.0.0-BETA/spatialite-sql-3.0.0.html#p14
> > ) appear to work.
>
> This is the first time I've tried implementing anything other than a format
> conversion or a simple select query using ogr.  Could anyone suggest an
> ogr2ogr command to me that would test whether it's a Spatialite/Geos
> installation problem or simply a bug?

Dan,

If http://trac.osgeo.org/osgeo4w/wiki/pkg-gdal is up-to-date, the current
version of GDAL in OSGeo4W would be GDAL 1.9.X. The SQLite dialect is a new
function of GDAL 1.10 ...

A workaround is to translate your shapefile into a temporary spatialite DB, and
then do the conversion to GMT with the SQL query.

Best regards,

Even

--
Geospatial professional services
http://even.rouault.free.fr/services.html
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