[postgis-users] WKTRaster problems on Mac

[Paragon Corporation]

Ken,

Did you use the theming features of OpenJump.  That is what we usually use
to see the output.

Here is a snapshot from the latest revision of our raster chapter of our
upcoming book (due out hopefully in Mid-late February in print).  
Which is the output of this query (a raster intersected with a 100 meter
radius buffer)  after we apply a gradient theme.

SELECT CAST((gval).val As integer) AS val,                             
     ST_AsBinary((gval).geom) As geom                                  
FROM (
SELECT ST_Intersection(rast,1,buf.geom) As gval                     
FROM ch13.kauai                                                        
     INNER JOIN (                                                       
     SELECT ST_Buffer(                                                  
      ST_GeomFromText('POINT(444205 2438785)',26904),100)               
     As geom) As buf ON                                                 
    ST_Intersects(rast,buf.geom))      As foo

Also BTW:  Didn't see an image attached to your email.

Also I recall OJ has some issues with double precision and long int which is
why we cast it to an integer

Hope that helps,
Regina and Leo
http://www.postgis.us                      





 

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of knussear
Sent: Tuesday, January 25, 2011 7:58 AM
To: postgis-users at postgis.refractions.net
Subject: Re: [postgis-users] WKTRaster problems on Mac


 I did finally get the Open Jump call to work, and can see the polygon
output. However its not entirely useful as I intend to use map algebra etc
on the raster......

The attachment from qgis shows the original  input raster on top of what
qgis shows for the raster. The qgis image of the postgis raster alone is
just all green (gray etc).

Ken


Pierre Racine-2 wrote:
> 
> Actually the image in the previous post is the original. Attached is 
> what he sees when viewing the image in QGIS after it was imported in 
> PostGIS raster...
> 
>>-----Original Message-----
>>From: postgis-users-bounces at postgis.refractions.net 
>>[mailto:postgis-users- bounces at postgis.refractions.net] On Behalf Of 
>>Pierre Racine
>>Sent: 24 janvier 2011 16:45
>>To: PostGIS Users Discussion
>>Subject: Re: [postgis-users] WKTRaster problems on Mac
>>
>>No but his first attempt was to open the image in QGIS. See the first
mail. I attach the image he sent
>>me as it was not attached in the first mail sent to users-postgis.
>>
>>I think this is typical of the first problem you met with the driver.
>>
>>Pierre
>>
>>>The GDAL driver is not being used in the commands I've seen. Did you 
>>>execute the query Pierre suggested?
>>>
>>>SELECT ST_AsBinary((gv).geom), (gv).val FROM (SELECT 
>>>ST_DumpAsPolygons(rast) gv FROM x01) foo
>>>
>>>Replacing "x01" by your table's name.
>>>
>>>--
>>>Jorge Arévalo
>>>Internet & Mobilty Division, DEIMOS
>>>jorge.arevalo at deimos-space.com
>>>http://mobility.grupodeimos.com/
>>>http://gis4free.wordpress.com
>>>http://geohash.org/ezjqgrgzz0g
>>>_______________________________________________
>>>postgis-users mailing list
>>>postgis-users at postgis.refractions.net
>>>http://postgis.refractions.net/mailman/listinfo/postgis-users
> 
>  
> _______________________________________________
> postgis-users mailing list
> postgis-users at postgis.refractions.net
> http://postgis.refractions.net/mailman/listinfo/postgis-users
> 
> 

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