[Qgis-developer] Spatial index - what about having it automatically created and updated ?

[Etienne Tourigny]

That's a python plugin (ftools), so it may not be available to everyone.

Better to do it natively (in the data provider) doing something like
OGR_DS_ExecuteSQL("CREATE SPATIAL INDEX ON tablename [DEPTH N]") - untested

I think it's a great idea to do this automatically with large ogr data
sources

as you said you should probably ask the gdal-dev list about which drivers
support spatial index creation an automatic update.

cheers
Etienne


On Thu, Feb 27, 2014 at 7:51 AM, kimaidou <kimaidou at gmail.com> wrote:

> Hi
>
> 2014-02-27 11:14 GMT+01:00 Andrea Peri <aperi2007 at gmail.com>:
>
> I guess more better is to use this extremely simple batch and create all
>> the index in one step only.
>> sing the gdal/ogr from osgeo4w.
>>
>> http://trac.osgeo.org/gdal/wiki/BatchCreationIndexesForShapefilesOnDOS
>>
>> Regards,
>>
>>
>
>  As I said, I am thinking of non power users. They surely won't create nor
> use such a batch file, even if it is simple. I know there is also the great
> tool Vector / Data management tools / Create Spatial Index, which can
> create one for all layers in one step. But users do not use it : they do no
> know it exists, or they know but forget to use it.
>
>
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