Thank you, Imran. How can obtain the extension? Right now, I do not need to manipulate the images. I only need to store the images in PostGIS. So I was wondering how to get the module and load the images into PostGIS.<br><br>
Thanks<br><br><div class="gmail_quote"><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Date: Sat, 22 Nov 2008 03:44:47 -0800 (PST)<br>
From: muhammad imran <<a href="mailto:imranserver@yahoo.com">imranserver@yahoo.com</a>><br>
Subject: Re: [postgis-users] PGRaster<br>
To: PostGIS Users Discussion <<a href="mailto:postgis-users@postgis.refractions.net">postgis-users@postgis.refractions.net</a>><br>
Message-ID: <<a href="mailto:487478.35686.qm@web53504.mail.re2.yahoo.com">487478.35686.qm@web53504.mail.re2.yahoo.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
Hi John,<br>
<br>
In the similar lines as oracle GeoRaster, Xing Lin developed a<br>
raster model for PostGIS named PGRaster. Metadata is<br>
stored as fields of PGRASTER METADATA type with spatial extent<br>
(BBOX) and SRID. Raster value type refers to scale of measurement<br>
that can be nominal, ordinal, interval or ratio. The model<br>
coordinates have same unit as that of specified SRID. Actual image<br>
data is stored in PGRASTER object type with blocks. Geotiff2pgraster<br>
loader creates blocks, GIST index, and pyramid levels while<br>
importing the image into database. Some basic SQL functions to<br>
handle parameters of data model are provided; however, many<br>
functions for image manipulation are under development. The source<br>
code is distributed under the terms of GNU General Public Licence by<br>
Refractions Research Inc; however, there is a debate over Xing Lin's<br>
PGRaster source code and design regarding patent violation by<br>
Oracle.<br>
<a href="http://lists.refractions.net/pipermail/postgis-devel/attachments/20070711/b6dfd192/PGRASTER%5C_20070710-0001.pdf" target="_blank">http://lists.refractions.net/pipermail/postgis-devel/attachments/20070711/b6dfd192/PGRASTER\_20070710-0001.pdf</a><br>
<br>
Regards,<br>
<br>
--Imran<br>
<br>
<br>
<br>
________________________________<br>
From: John Zhang <<a href="mailto:johnzhang06@gmail.com">johnzhang06@gmail.com</a>><br>
To: <a href="mailto:postgis-users@postgis.refractions.net">postgis-users@postgis.refractions.net</a><br>
Sent: Saturday, November 22, 2008 3:22:31 AM<br>
Subject: [postgis-users] PGRaster<br>
<br>
Hi there,<br>
<br>
Could anyone tell me about that? Is it implemented in postGIS 1.3? Having read some articles about GeoRatser from Oracle, I was wondering if PostGIS's PGRaster is there for us to use. Any input on it would be much appreciated.<br>
<br>
Have a good weekend<br>
John<br>
<br>
<br>
<br>
<br>
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