[postgis-users] [Qgis-developer] Fwd: WKTRaster Plugin 0.1

[Jorge Arévalo]

Good news! Which version of GDAL/PostGIS are you using? I commited a
new version of the GDAL driver on October, and included WKT Raster as
official part of PostGIS on September 26th.

On Mon, Nov 29, 2010 at 9:40 PM, Maurício de Paulo
<mauricio.dev at gmail.com> wrote:
> Ok, after a few minutes of implementation here it is. Now the plugin lists
> the tables from the database and shows some of it's metadata. Now I think
> it's fully functional. If anyone finds a bug , please tell me.
> Best regards,
>
> On Mon, Nov 29, 2010 at 3:50 PM, Maurício de Paulo <mauricio.dev at gmail.com>
> wrote:
>>
>> Hi Jorge,
>> Good news. The plugin wktraster is exactly a tool to connect qgis to
>> postgis rasters through GDAL and visualize the data.
>> Stefan asked about the processing. This is something the plugin doesn't
>> do.
>> I've tested with a friend both qgis (with the plugin) and mapserver
>> loading postgis rasters. Both worked fine, and the only requirement is qgis
>> compiled against gdal 1.7.
>> I'm interested in updating the plugin this week to work as I've planned.
>> It's going to speak for itself.
>> Best Regards,
>> Mauricio
>> Ps.: Anyone willing to help and join this effort is always welcome.
>>
>> On Mon, Nov 29, 2010 at 3:45 PM, Jorge Arévalo
>> <jorge.arevalo at deimos-space.com> wrote:
>>>
>>> Hi,
>>>
>>> If you want a GDAL version compiled with PostGIS Raster support on
>>> Windows, you may take a look here: http://vbkto.dyndns.org:1280/sdk/
>>>
>>> Visualizing PostGIS Raster data via GDAL driver is one of my TODO
>>> tasks. I don't have too much free time now, but if you're interested
>>> on this topic, and you're going to test it, please let me know. There
>>> are more people interested on that, and I'm providing support to some
>>> of them (not as much support as I'd like, because the time...)
>>>
>>> Best regards,
>>>
>>> --
>>> Jorge Arévalo
>>> Internet & Mobilty Division, DEIMOS
>>> jorge.arevalo at deimos-space.com
>>> http://mobility.grupodeimos.com/
>>> http://gis4free.wordpress.com
>>>
>>> 2010/11/29 Stefan Keller <sfkeller at gmail.com>:
>>> > Ok (I'm cross posting to qgis-developer and postgis-users).
>>> >
>>> > I'm still not sure if I did express myself clearly:
>>> > You say, that under Windows, there's no QGIS compiled against GDAL
>>> > 1.7/1.8 with PostGIS Raster support?
>>> >
>>> > What I finally dream of, is using QGIS to display the results of a SQL
>>> > query (either as raster or vector) against at least one raster layer.
>>> > This query contains raster constructors (like ST_Intersection) and
>>> > operations (like ST_Reclass; see
>>> > http://trac.osgeo.org/postgis/wiki/WKTRaster).
>>> >
>>> > Any suggestions?
>>> > -S.
>>> >
>>> >
>>> > 2010/11/29 Maurício de Paulo <... at gmail.com>:
>>> >> Hi Stefan,
>>> >>
>>> >> WKTRaster Plugin just repasses the right information to the GDAL
>>> >> driver.
>>> >> It's not a new qgis driver.
>>> >> I'm planning on implementing the table listing using pyqt this week. I
>>> >> was a
>>> >> little delayed by my master's application.
>>> >>
>>> >> The idea in the plugin is simply find the QGIS's conections available,
>>> >> list
>>> >> the raster tables inside postgis and pass the right arguments to the
>>> >> gdal
>>> >> driver.
>>> >>
>>> >> At the moment I haven't found any gdal 1.7 windows build with QGIS.
>>> >> GDAL 1.7
>>> >> introduces wktraster. The driver conects to postgis raster and read it
>>> >> as a
>>> >> binary. It's still VERY unstable and gdal version 1.8 seems to be
>>> >> greatly
>>> >> improved.
>>> >> So what a windows user need to get the plugin to work is a (still not
>>> >> found)
>>> >> qgis compiled against gdal 1.7.
>>> >> You can compile your's from source if needed.
>>> >>
>>> >> So, as far as qgis to wktraster, with the plugin qgis reads the
>>> >> wktraster as
>>> >> a regular raster. Just for show. If you did some kind of processing
>>> >> and
>>> >> populated a new raster table, qgis is going to read that result too.
>>> >> The
>>> >> plugin is not intended (at the moment at least) to raster processing
>>> >> inside
>>> >> postgis. It just loads the table to the screen.
>>> >>
>>> >> In the future, with a more stable wktraster probably someone (or me)
>>> >> is
>>> >> going to write a set of wktraster's tools as a plugin, but for the
>>> >> moment it
>>> >> should be run as sql. I advise postgis manager's to the task.
>>> >>
>>> >> Best regards,
>>> >>
>>> >>
>>> >> 2010/11/29 Stefan Keller <... at gmail.com>
>>> >>>
>>> >>> Hi,
>>> >>>
>>> >>> There are new versions around of "PostGIS Raster"
>>> >>> (renamed from formerly known "PostGIS WKT Raster").
>>> >>>
>>> >>> What's the status of your "WKTRaster Plugin 0.1"?
>>> >>> I assume it's rendering the raster values (e.g. from ST_AsBinary) -
>>> >>> not the polygons/geomvals (from ST_DumpAsPolygons), right?
>>> >>> Is there a chance to get it running on Windows too?
>>> >>> Are there other plugins?
>>> >>>
>>> >>> Yours, S.
>>> > _______________________________________________
>>> > postgis-users mailing list
>>> > postgis-users at postgis.refractions.net
>>> > http://postgis.refractions.net/mailman/listinfo/postgis-users
>>> >
>>
>>
>>
>> --
>> Mauricio de Paulo
>> Engenheiro Cartografo
>>
>
>
>
> --
> Mauricio de Paulo
> Engenheiro Cartografo
>
>



-- 
Jorge Arévalo
Internet & Mobilty Division, DEIMOS
jorge.arevalo at deimos-space.com
http://mobility.grupodeimos.com/
http://gis4free.wordpress.com