Hey Andrea,
I’ve submitted a bug report for this:
https://osgeo-org.atlassian.net/browse/GEOS-7012
I’ve spent quite some time looking through the source code, but having written
very little in Java (let alone Spring, etc), and not having any kind of IDE or
environment setup, it’s been a challenge getting any kind of insight into
what’s happening. It’s likely that someone more familiar with the source code
would be able to identify the root cause pretty quickly.
Cheers,
Tom
From: Andrea Aime
<[email protected]<mailto:[email protected]>>
Date: Monday, 4 May 2015 4:36 pm
To: Tom Wardrop <[email protected]<mailto:[email protected]>>
Cc:
"[email protected]<mailto:[email protected]>"
<[email protected]<mailto:[email protected]>>
Subject: Re: [Geoserver-users] Poor quality rendering of layers in Layer Group
On Mon, May 4, 2015 at 6:49 AM, Tom Wardrop
<[email protected]<mailto:[email protected]>> wrote:
Hi all,
I have my WMS service and raster layers configured use bilinear resampling.
While these layers look perfect on their own, when added to a layer group,
GeoServer seems to fall back to nearest neighbour resampling making the image
quality worse. I’ve noticed this behaviour whenever there’s more than one layer
in a layer group as a layer group containing only a single a single layer
appears fine.
I’ve found the issue has already been reported on the mailing list by someone
else as affecting GeoServer v2.1. I’m using 2.6.2 so obviously the issue has
yet to be addressed. The existing issue can be found here:
http://sourceforge.net/p/geoserver/mailman/message/27750315/
Here is a link which includes an example of a layer group with a single layer
(same as viewing the layer on it’s own) and another showing the layer group
with multiple layers:
https://drive.google.com/folderview?id=0B0QYHTaybWU_fjF5SEtCSDZvOU1PRzVCb3J1dFBiWUloYnJCUDRua201ZGZweGtrTnUtb3c&usp=sharing
The issue linked above mentioned that in GeoServer 2.1 the raster rendering
code paths were split; one is server in image server mode, and the other in map
server mode, which is likely the cause of this.
I see the thread, but could not find a ticket in the bug tracker. There are too
many discussions, we just lose track
of them, could you open a report in the bug tracker instead?
https://osgeo-org.atlassian.net/projects/GEOS
This really needs to be fixed.
As an open source project, features and fixes are done either when there is
funding directed to a specific topic (working hours jobs)
or when someone decides they are more important than their spare time (spare
time jobs). Everybody is invited to contribute,
and indeed many do, we have like 60 contributors over a year, against a core
team of 5-10 direct committers.
You seem to be motivated, do you have time and skill?
Instructions for contribute here:
https://github.com/geoserver/geoserver/blob/master/CONTRIBUTING.md
Or if anybody else here wants to help, and has skill related to rendering, this
would be a great occasion to
give back to the project, too.
Cheers
Andrea
--
==
GeoServer Professional Services from the experts! Visit
http://goo.gl/NWWaa2 for more information.
==
Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39 339 8844549
http://www.geo-solutions.it
http://twitter.com/geosolutions_it
AVVERTENZE AI SENSI DEL D.Lgs. 196/2003
Le informazioni contenute in questo messaggio di posta elettronica e/o nel/i
file/s allegato/i sono da considerarsi strettamente riservate. Il loro utilizzo
è consentito esclusivamente al destinatario del messaggio, per le finalità
indicate nel messaggio stesso. Qualora riceviate questo messaggio senza esserne
il destinatario, Vi preghiamo cortesemente di darcene notizia via e-mail e di
procedere alla distruzione del messaggio stesso, cancellandolo dal Vostro
sistema. Conservare il messaggio stesso, divulgarlo anche in parte,
distribuirlo ad altri soggetti, copiarlo, od utilizzarlo per finalità diverse,
costituisce comportamento contrario ai principi dettati dal D.Lgs. 196/2003.
The information in this message and/or attachments, is intended solely for the
attention and use of the named addressee(s) and may be confidential or
proprietary in nature or covered by the provisions of privacy act (Legislative
Decree June, 30 2003, no.196 - Italy's New Data Protection Code).Any use not in
accord with its purpose, any disclosure, reproduction, copying, distribution,
or either dissemination, either whole or partial, is strictly forbidden except
previous formal approval of the named addressee(s). If you are not the intended
recipient, please contact immediately the sender by telephone, fax or e-mail
and delete the information in this message that has been received in error. The
sender does not give any warranty or accept liability as the content, accuracy
or completeness of sent messages and accepts no responsibility for changes
made after they were sent or for other risks which arise as a result of e-mail
transmission, viruses, etc.
-------------------------------------------------------
________________________________
Mareeba Shire Council Disclaimer
This message and any attachments may contain privileged and confidential
information intended only for the use of the intended addressee(s). Any
unauthorised use of this material is prohibited. If you received this message
in error please notify the sender immediately, delete the message and destroy
any printed or electronic copies. Opinions expressed in this e-mail are those
of the sender and do not necessarily represent the views of the Mareeba Shire
Council. Council does not accept any responsibility for the loss or damage that
may result from reliance on, or the use of, any information contained in this
e-mail or attachments.
We recommend that you scan this e-mail and any attachments for viruses before
opening. This Council does not accept liability for any loss or damage incurred
either directly or indirectly from opening this e-mail or any attachments to it.
------------------------------------------------------------------------------
One dashboard for servers and applications across Physical-Virtual-Cloud
Widest out-of-the-box monitoring support with 50+ applications
Performance metrics, stats and reports that give you Actionable Insights
Deep dive visibility with transaction tracing using APM Insight.
http://ad.doubleclick.net/ddm/clk/290420510;117567292;y
_______________________________________________
Geoserver-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/geoserver-users
