Thank you for your tips Arne. Looking more into this and after adding
a google base layer to the demo, I found the following observation.
Here is my sample blank tile URL, when posted in a browser.
"400: Requested horizontal resolution: 152.8740565429689 ,
best match: 113.62888085937448 exceeds 10% threshold. Perhaps
the client is configured with an incorrect set of scales
(resolutions), or the DPI setting is off compared to the one
in GWC ?"
The log file says the same
ERROR [geowebcache.GeoWebCacheDispatcher] -Requested horizontal
resolution: 152.8740565429689 , best match: 113.62888085937448
exceeds 10% threshold. Perhaps the client is configured with an
incorrect set of scales (resolutions), or the DPI setting is off
compared to the one in GWC ?"
The resolutions that are working with WMS layer and google maps are
resolutions: [156543.03390625, 78271.516953125, 39135.7584765625,
19567.87923828125, 9783.939619140625, 4891.9698095703125,
2445.9849047851562, 1222.9924523925781, 611.4962261962891,
305.74811309814453, 152.87405654907226, 76.43702827453613,
38.218514137268066, 19.109257068634033, 9.554628534317017,
4.777314267158508, 2.388657133579254, 1.194328566789627,
0.5971642833948135, 0.29858214169740677, 0.14929107084870338,
0.07464553542435169, 0.037322767712175846, 0.018661383856087923,
0.009330691928043961, 0.004665345964021981],
The default working GWC resolutions are
resolutions: [227.25776171874895, 113.62888085937448,
56.81444042968724, 28.40722021484362, 14.20361010742181,
7.101805053710905, 3.5509025268554524, 1.7754512634277262,
0.8877256317138631, 0.44386281585693155, 0.22193140792846577,
0.11096570396423289, 0.05548285198211644, 0.02774142599105822,
0.01387071299552911, 0.006935356497764555, 0.0034676782488822777,
0.0017338391244411389, 8.669195622205694E-4, 4.334597811102847E-4,
2.1672989055514236E-4, 1.0836494527757118E-4, 5.418247263878559E-5,
2.7091236319392795E-5, 1.3545618159696397E-5]
I could clearly see that resolutions of GWC example do not match to
that of Geoserver/Openlayers.Any help here? .
Thanks,
Ravi.
------------------------------------------------------------------------
*From:* Arne Kepp <[email protected]>
*To:* ravitheja <[email protected]>
*Cc:* [email protected]
*Sent:* Tue, January 4, 2011 12:01:08 PM
*Subject:* Re: [Geoserver-users] Geoserver inbuilt Geowebcache with
"Directory of Spatial Files"
Not sure.
Just blank tiles usually means that GeoServer rendered an empty tile.
Errors on the GWC side usually result in pink tiles (because they're
text files, not image files) that you can right click and read.
What are the Lat/Lon bounds of MyLayer according to GS featuretype
config?
I'm coming down hard with the flu, so here are some general tips:
1) Change the path in a tile URL from geoserverver/gwc/service/wms to
just geoserver/wms , what does the WMS respond with?
2) Check GeoServer's logfiles for errors?
-Arne
On 1/4/11 4:58 PM, ravitheja wrote:
> Hi,
>
> I am trying to make use of Geowebcache built with in
geoserver(2.0.2) for a
> directory of shapefiles. I pointed the cache directory to my custom
location
> "without" any custom geowebcache.xml file there.When I use the
automatic
> demos, I get 3 options while seeding for each of the layers.
>
> a) EPSG:4326,
> b) EPSG:900913 (URL structure)
>
http://MyServer/geoserver/gwc/demo/MyWorkspace:MyLayer?gridSet=EPSG:900913&format=image/png
<http://MyServer/geoserver/gwc/demo/MyWorkspace:MyLayer?gridSet=EPSG:900913&format=image/png>
>
> c) EPSG:900913_MyWorkspace:MyLayer. (URL structure)
>
http://MyServer/geoserver/gwc/demo/MyWorkspace:MyLayer?gridSet=EPSG:900913_MyWorkspace:MyLayer&format=image/png
<http://MyServer/geoserver/gwc/demo/MyWorkspace:MyLayer?gridSet=EPSG:900913_MyWorkspace:MyLayer&format=image/png>
>
> When I preview the layer in the demos page, I could see that a and
c work
> well, but b doesn't work(getting blank tiles). I could see that
cache gets
> created for a and c in my custom location. Anyone has suggestions
as to why
> b doesn't work?
>
>
> My Application:
> I am testing it using geoext and openlayers for overlaying the "entire
> datastore layers" with ESPG:900913 and google maps as base layers.
I have
> tried it for a good amount of time and couldn't figure it out. I
suspect it
> is something related to case b.
>
> Any help on this is greatly appreciated..
>
> Thanks,
> Ravi.
------------------------------------------------------------------------------
Learn how Oracle Real Application Clusters (RAC) One Node allows customers
to consolidate database storage, standardize their database environment, and,
should the need arise, upgrade to a full multi-node Oracle RAC database
without downtime or disruption
http://p.sf.net/sfu/oracle-sfdevnl
_______________________________________________
Geoserver-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geoserver-users
