The test data are a little bigger than expected-- 195MB. They will be
available shortly at the following FTP site:
ftp://ftp.clevelandmetroparks.com/pdnr/out
Thanks,
Steve
Stephen Mather, GIS Manager
Cleveland Metroparks
4101 Fulton Pkwy
Cleveland, OH 44144
svm@anonymised.com
Phone: (216) 635-3243
FAX: (216) 635-3286
-----Original Message-----
From: simboss1@anonymised.com [mailto:simboss1@anonymised.com] On Behalf Of Simone
Giannecchini
Sent: Saturday, March 20, 2010 10:16 AM
To: svm@anonymised.com
Cc: geoserver-devel@lists.sourceforge.net
Subject: Re: [Geoserver-devel] Image pyramid improvements and tutorial
I guess that doing some testing with your data could be helpful. I have some
uncommitted fixes/improvements that might solve these issues.
Simone
On 3/19/10, Stephen V. Mather <svm@anonymised.com> wrote:
Qcuik questions:
- are you adding a reprojection in the mix while you are doing this
tests?
I have tried it both with and without reprojection, to the same
effect.
- are all your granules of the same resolution?
Yes, they are all 0.15m pixels in 5000x4000 images. I have tried both
leaving the existing 0 level images at 5000x4000 (-pyramidOnly) and
retiling to 2048x2048, both with the same result.
Steve
On Tue, Mar 16, 2010 at 1:13 PM, Stephen Mather
<svm@anonymised.com> wrote:
Hi Andrea,
I've been working on giving it a spin with our own data. The
tutorial is excellent. Easy to read and follow.
I'm currently testing it on a Windows 2003 server with nightly
build geoserver-2.0.x-2010-03-03-bin.zip, and
geoserver-2.0.2-SNAPSHOT-pyramid-plugin.zip
The test I've been doing is with 0.5ft (0.15m) color orthophotos
that sum to about 150GB as TIFFs. They are currently tiled as
5000x4000 images. I've retiled them with gdal_retile as 2048x2048
images with overviews with the following command:
gdal_retile -v -s_srs "EPSG:102722" -levels 5 -ps 2048 2048
-targetdir test3 --optfile tilelist.txt
I'm currently working on a subset of the data for testing. Checking
all the tiles generated from gdal_retile, they all look fine in an
image viewer, and check out (with a spot check) with gdalinfo.
When I load them in GeoServer, I get a strange effect. Some of the
tiles never render at their full resolution for a given zoom level,
but at a reduced resolution. If I load ~16 tiles vs. loading e.g.
40+ tiles the places where this happens shifts, i.e. tiles that were
a problem before stop being a problem, while other tiles exhibit the
same behavior.
Does this make sense, is this an effect you've seen, and would images
and log files be helpful?
Thanks,
Steve
Andrea Aime-4 wrote:
Hi all,
lately I've been working, under OpenGeo request, to improve the
situation vs image pyramids, in particular, making it easier to
configure a file based one.
...
Is anyone interested to give the tutorial a spin, a review? Is there
anything missing or that could be done better?
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.
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