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 >> _______________________________________________ >> postgis-users mailing list >> postgis-users@postgis.refractions.net >> http://postgis.refractions.net/mailman/listinfo/postgis-users > > > > -- > Greetings > Cheryl > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users > -- Bborie Park Programmer Center for Vectorborne Diseases UC Davis 530-752-8380 bkp...@ucdavis.edu _______________________________________________ postgis-users mailing list postgis-users@postgis.refractions.net http://postgis.refractions.net/mailman/listinfo/postgis-users
