[Qgis-developer] PostGIS Rasters

[Jorge Gustavo Rocha]

Hi Andreas,

The QGIS performance reading rasters from Postgis is not so bad, if
pyramids are available on the database. QGIS takes advantage of the
pyramids, if they exist. Check [1].

Regards,

Jorge

[1]
http://gis.stackexchange.com/questions/151632/poor-performance-with-storing-large-rasters-in-postgis-and-visualising-in-qgis/227324#227324

Às 06:56 de 11-04-2017, Neumann, Andreas escreveu:
> Hi,
> 
> If there will be a new Postgis raster provider for QGIS, it should also
> support the pyramid tables (separate tables) - which as far as I know -
> is not yet supported. If you add a layer from DB-manager you load a
> fixed resolution and the other pyramid tables won't be used. Thats one
> of the reasons, rasters in Postgis display quite slow in QGIS.
> 
> Andreas
> 
> On 2017-04-11 04:16, Robert Hewlett wrote:
> 
>> Hi,
>>  
>> Are there plans to build a plugin for PostGIS rasters similar to the
>> vector plugin. I know how to add the rasters from the DB manager but
>> the experience/workflow is much different and the connections go 'stale'.
>>  
>> I am willing to help code it.
>>  
>> Regards,
>>  
>> Rob
>>
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>  
> 
>  
> 
> 
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J. Gustavo
-- 
Jorge Gustavo Rocha
Departamento de Informática
Universidade do Minho
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