Trunk is the only one that I check fixes into.
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Jason Birch
Sent: Wed 6/13/2007 6:30 PM
To: MapGuide Users Mail List
Cc:
Subject: RE: [mapguide-users] postgis fdo-ogr and spatial indexes
I believe that this is the 3.2.x branch:
http://svn.osgeo.org/fdoogr/branches/3.2.x/Providers/OGR/
And this is the "bloated" version in trunk :)
http://svn.osgeo.org/fdo/trunk/Providers/OGR/
(that's a joke. fdoogr is the most minimal provider out there)
I'm not sure which is being used for the recent builds...
Jason
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of alucas
Sent: Wednesday, June 13, 2007 14:48
To: [email protected]
Subject: Re: [mapguide-users] postgis fdo-ogr and spatial indexes
Where can I download the source code of ogr provider?
Frank Warmerdam-2 wrote:
>
> alucas wrote:
>> Hello,
>>
>> I'm testing the ogr provider with postgis and it works fine, I
>> connect vía Map 2008 and MGOS 1.2. So, the question is about the
>> spatial indexes (gist).
>> How works the ogr provider with gist indexes? I'm attempting to get
>> better performance with this configuration.
>
> "alucas",
>
> GDAL/OGR 1.4 uses the following construct when building a query
> against a postgis table to apply a spatial filter.
>
> m_poFilterGeom->getEnvelope( &sEnvelope );
> osWHERE.Printf("WHERE %s && SetSRID('BOX3D(%.12f %.12f, %.12f
> %.12f)'::box3d,%d) ",
> pszGeomColumn,
> sEnvelope.MinX, sEnvelope.MinY,
> sEnvelope.MaxX, sEnvelope.MaxY,
> nSRSId );
>
> This is intended to use the spatial index and normally works as far as
> I know. If you run MgServer from the commandline, and enable
> CPL_DEBUG (set this enviroment variable to ON) you should see debug
> output from the OGR provider indicating the specific query it ends up
> using. It should be prefixed with something like:
>
> OGRPGTableLayer::BuildWhere returns:
>
> Best regards,
> --
> ---------------------------------------+------------------------------
> ---------------------------------------+--------
> I set the clouds in motion - turn up | Frank Warmerdam,
> [EMAIL PROTECTED]
> light and sound - activate the windows | http://pobox.com/~warmerdam
> and watch the world go round - Rush | President OSGeo,
http://osgeo.org <http://osgeo.org/>
>
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>
>
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