For anyone encountering the same problem, I found the solution was to set the max oversampling factor to a lower value than the default. A value of 3 provided suitable results for the raster layers and CRSs I'm working with.
>From looking at the GeoTools source code, the default value is 30 in version >GeoTools 22.1 (used in GeoServer 2.18.2) and 10000 in earlier versions of >GeoTools (used in GeoServer versions 2.16.1 to 2.18.1). The max oversampling factor is set as a java option in the GeoServer startup script (this is covered in the GeoServer user guide), e.g. -Dorg.geotools.coverage.max.oversample=3. Regards, Aaron Sedgmen. -----Original Message----- From: Sedgmen Aaron <[email protected]> Sent: Wednesday, 3 March 2021 10:23 AM To: [email protected] Subject: Re: [Geoserver-users] Gaps in tiled WMS raster layers [SEC=OFFICIAL] Yes, it does look similar. I tried changing between JAI-EXT and JAI which was suggested as a possible source of the problem in GEOS-9016, to no avail. This is looking like a bug so will log a ticket. Regards, Aaron Sedgmen. -----Original Message----- From: Richard Duivenvoorde <[email protected]> Sent: Monday, 1 March 2021 8:25 PM To: [email protected] Subject: Re: [Geoserver-users] Gaps in tiled WMS raster layers [SEC=OFFICIAL] This looks like an earlier issue I had in 2.14: https://osgeo-org.atlassian.net/jira/software/c/projects/GEOS/issues/GEOS-9016 which 'disappeared' after some newer release of 2.14.1.... Regards, Richard Duivenvoorde PS the demo page on duif.net is not there anymore... On 3/1/21 6:14 AM, Sedgmen Aaron wrote: > @Olysterthanks for the advice. Unfortunately it hasn't resolved the problem. > I've tried a range of metatile and gutter size combinations and it doesn't > appear to make a difference. > > > > To illustrate the problem, this is a screenshot of the spearfish dem raster > layer in QGIS, 512x512 tiles, EPSG:4326 (GeoServer is reprojecting the data > from EPSG:26713), zoomed in to a scale of 1:500. The default interpolation > method for the layer is set to bilinear in GeoServer. > > > > > > Regards, > > > > Aaron Sedgmen. > > > > -----Original Message----- > From: Olyster <[email protected]> > Sent: Saturday, 27 February 2021 12:15 AM > To: [email protected] > Subject: Re: [Geoserver-users] Gaps in tiled WMS raster layers [SEC=OFFICIAL] > > > > Hi, > > > > have a look at default meta tile size and default gutter size in caching > settings. > > > > For example, I use 1 X 1 metatile with 10 gutter size. > > > > Hope this helps > > > > > > > > -- > > Sent from: http://osgeo-org.1560.x6.nabble.com/GeoServer-User-f3786390.html > <http://osgeo-org.1560.x6.nabble.com/GeoServer-User-f3786390.html> > > > > > > _______________________________________________ > > Geoserver-users mailing list > > > > Please make sure you read the following two resources before posting to this > list: > > - Earning your support instead of buying it, but Ian Turton: > http://www.ianturton.com/talks/foss4g.html#/ > <http://www.ianturton.com/talks/foss4g.html#/> > > - The GeoServer user list posting guidelines: > http://geoserver.org/comm/userlist-guidelines.html > <http://geoserver.org/comm/userlist-guidelines.html> > > > > If you want to request a feature or an improvement, also see this: > https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer > > <https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer> > > > > > > [email protected] > <mailto:[email protected]> > > https://lists.sourceforge.net/lists/listinfo/geoserver-users > <https://lists.sourceforge.net/lists/listinfo/geoserver-users> > > > Geoscience Australia Disclaimer: This e-mail (and files transmitted with it) > is intended only for the person or entity to which it is addressed. If you > are not the intended recipient, then you have received this e-mail by mistake > and any use, dissemination, forwarding, printing or copying of this e-mail > and its file attachments is prohibited. The security of emails transmitted > cannot be guaranteed; by forwarding or replying to this email, you > acknowledge and accept these risks. > > > _______________________________________________ > Geoserver-users mailing list > > Please make sure you read the following two resources before posting to this > list: > - Earning your support instead of buying it, but Ian Turton: > http://www.ianturton.com/talks/foss4g.html#/ > - The GeoServer user list posting guidelines: > http://geoserver.org/comm/userlist-guidelines.html > > If you want to request a feature or an improvement, also see this: > https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer > > > [email protected] > https://lists.sourceforge.net/lists/listinfo/geoserver-users > _______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users Geoscience Australia Disclaimer: This e-mail (and files transmitted with it) is intended only for the person or entity to which it is addressed. If you are not the intended recipient, then you have received this e-mail by mistake and any use, dissemination, forwarding, printing or copying of this e-mail and its file attachments is prohibited. The security of emails transmitted cannot be guaranteed; by forwarding or replying to this email, you acknowledge and accept these risks. _______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users Geoscience Australia Disclaimer: This e-mail (and files transmitted with it) is intended only for the person or entity to which it is addressed. If you are not the intended recipient, then you have received this e-mail by mistake and any use, dissemination, forwarding, printing or copying of this e-mail and its file attachments is prohibited. The security of emails transmitted cannot be guaranteed; by forwarding or replying to this email, you acknowledge and accept these risks. _______________________________________________ Geoserver-users mailing list Please make sure you read the following two resources before posting to this list: - Earning your support instead of buying it, but Ian Turton: http://www.ianturton.com/talks/foss4g.html#/ - The GeoServer user list posting guidelines: http://geoserver.org/comm/userlist-guidelines.html If you want to request a feature or an improvement, also see this: https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
