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<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial>Sunny,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial>Good question. I suspect it will be worse at
least at the moment (just as PostGIS was worse when it first came out than
reading from shapefile). How much worse I'm not sure. If you
try and see speed issues, we can tackle them, but it hasn't really been our main
focus.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial> I suspect no one has tested it extensively as far as
dishing out large datasets. The primary focus of PostGIS Raster is for
analysis and then secondary is the rendering. That is not to say it will
work badly or we don't care about rendering speed, just that the GDAL drivers
etc. needed by Mapserver probably still have a few wrinkles which would
make it suboptimal for that kind of work. The more people use it and find
issues, the faster issues will be addressed since we would have data points to
go by.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial>As far as GeoServer goes, I recall reading a thread where
Chris Holmes said he would work on a PostGIS Raster support for GeoServer, but
not sure where that is down the pipe, but to my knowledge, GeoServer does
not YET support PostGIS raster.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial>Hope that helps,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=631512322-29012011><FONT color=#0000ff
size=2 face=Arial>Regina</FONT></SPAN></DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B>
postgis-users-bounces@postgis.refractions.net
[mailto:postgis-users-bounces@postgis.refractions.net] <B>On Behalf Of </B>Sunny
Teo<BR><B>Sent:</B> Saturday, January 29, 2011 3:44 AM<BR><B>To:</B>
postgis-users@postgis.refractions.net<BR><B>Subject:</B> [postgis-users] PostGIS
Raster Performance<BR></FONT><BR></DIV>
<DIV></DIV>List,
<DIV><BR></DIV>
<DIV>Can anyone comment on the "Performance" of the PostGIS Rater or WKTRaster
?</DIV>
<DIV><BR></DIV>
<DIV>If you were to serve this onto a web application, how effective are they?
Well, I'm talking of very large datasets like 10GB each and 100 of them. How
does it compare with serving the images as files directly.. from a GeoTIFF,
ECW, Sid, etc. (obviously using Geoserver/Mapserver or some specialized image
serving solution)</DIV>
<DIV><BR></DIV>
<DIV>Been searching all over the web for the answers, but no luck.</DIV>
<DIV><BR></DIV>
<DIV>Hope to get some insights from the users.</DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>
<DIV>Thank you;</DIV>
<DIV>Sunny. </DIV></BODY></HTML>