Generally, in Linux you would only have one instance of the GDAL library
installed. This one instance would be what any dependent programs would
call.
Granted, I always build my own GIS stack (PROJ.4, GEOS, PostgreSQL,
GDAL, PostGIS, QGIS) so I am able to have absolute control over how
things are built.
In Windows and possibly OSX, that may not be the case. QGIS may provide
it's own copy of the GDAL library while PostGIS is providing its own one.
As for GDAL 1.9, everything is the same.
-bborie
On 03/08/2012 10:41 AM, Pierre Racine wrote:
So I understand that, on Linux, the GDAL library used by PostGIS is the same as
the one used by the GDAL utilities and QGIS. Which is not the case on Windows
where PostGIS has its own GDAL dll. Right?
What if you test with GDAL 1.9?
Pierre
-----Original Message-----
From: postgis-users-boun...@postgis.refractions.net [mailto:postgis-users-
boun...@postgis.refractions.net] On Behalf Of Bborie Park
Sent: Thursday, March 08, 2012 1:38 PM
To: PostGIS Users Discussion
Subject: Re: [postgis-users] problem with raster2pgsql
I just double-checked the images on QGIS 1.7.3 using the latest GDAL trunk
(r24093) with the PostGIS Raster plugin.
I've attached screenshots in QGIS.
On Thu, Mar 8, 2012 at 10:29 AM, Bborie Park<bkp...@ucdavis.edu> wrote:
Cheryl,
I took a look at your adjusted images and they fine by me. I loaded
the PNG files into PostGIS Raster and ran an ST_Histogram on the
aspect image to see if the data is there.
I called raster2pgsql with the following...
raster2pgsql -t 50x50 -I -C -Y Aspect.png aspect> aspect.sql
My bet is that there is something wrong with QGIS, which uses GDAL to
access PostGIS raster. There is another email thread related to
PostGIS raster access using GDAL and problems arising from that.
-bborie
On Thu, Mar 8, 2012 at 3:07 AM, cheryl buckley<cheryl.b...@gmail.com>
wrote:
Hi bborie and Pierre,
I am not too sure if what I did was a hundred percent correct. I was
thinking perhaps I am suppose to make a setting in QGIS to obtain a
corrected image, and not alter the "-t 100x100" in the raster2pgsql
command line, i'm not too sure. But, non-the-less find attached zip
folders (screenshots) of my images I generated. The first set is the
faulty images with the "-t 100x100" and the second set is the images
generated with a "-t 300x300". Please note that the hillshade image
in this case also came out faulty. I also made screenshots of the
histograms of the images. Perhaps this will now shed some light.
Please do confirm if you were able to unzip the images and view them.
Regards
On Thu, Mar 8, 2012 at 10:14 AM, Pierre Racine
<pierre.rac...@sbf.ulaval.ca> wrote:
Yes. All tiles of a raster will have the same dimensions. So an
edge tile would have the same dimensions as every other tile, just
that some of the tiles have no data.
Probably no link with the bug being discussed but I'm curious. What happen
when the raster do not have a nodata value defined and you have to pad some
tiles?
Pierre
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Greetings
Cheryl
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Bborie Park
Programmer
Center for Vectorborne Diseases
UC Davis
530-752-8380
bkp...@ucdavis.edu
--
Bborie Park
Programmer
Center for Vectorborne Diseases
UC Davis
530-752-8380
bkp...@ucdavis.edu
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--
Bborie Park
Programmer
Center for Vectorborne Diseases
UC Davis
530-752-8380
bkp...@ucdavis.edu
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