[postgis-users] SQLite and postGIS

[Richard Greenwood]

I should note that ogr2ogr creates a SQLite spatial table even more
easily that SpatiaLite:
   ogr2ogr -f "SQLite" dest.db source.shp source

Rich



On Sun, Apr 13, 2008 at 9:26 AM, Richard Greenwood
<richard.greenwood at gmail.com> wrote:
> On Fri, Apr 11, 2008 at 9:29 PM, Frank Warmerdam <warmerdam at pobox.com> wrote:
>  >  Puneet, Rich,
>  >
>  >  SQLite is already supported as a spatial database by OGR.  The caveat
>  >  is that in GDAL 1.5 it is just using a text column with WKT geometries so
>  >  the spatial performance is not great.
>  >
>  >  To use this with MapServer you would use CONNECTIONTYPE OGR and the
>  >  CONNECTION string would be the path for the sqlite database.  The
>  >  DATA statement should hold the table name be accessed.
>
>  Totally cool!
>
>  I used SpatiaLite (http://www.gaia-gis.it/spatialite/) LoadShapefile()
>  function to import a shapefile into a SQLite db. The geometries are
>  stored as BLOBs in a field named "geom" Then:
>    sqlite> alter table ownership add column WKT_GEOMETRY;
>    sqlite> update ownership set WKT_GEOMETRY=astext(geom);
>
>  Getting MapServer to use the SQLite table was very easy. Recent
>  versions of MS4W have SQLite support in GDAL. So simply adding
>    CONNECTIONTYPE OGR
>    CONNECTION "path/to/SQLite.db"
>  gets MapServer drawing geometries from SQLite.
>
>  I'm playing with a table containing about 15,000 polygons and
>  performance is fine.
>
>  Thanks Frank, for pointing me in the right direction.
>
>  Rich
>
>  --
>
> Richard Greenwood
>  richard.greenwood at gmail.com
>  www.greenwoodmap.com
>



-- 
Richard Greenwood
richard.greenwood at gmail.com
www.greenwoodmap.com