Hi all, Thanks Andria, that works.
I am creating an image mosaic from a number of files. I created the mosaic, edited the .properties files and I can zoom all the way in with no corruption. It might be a bit slower but that is expected I guess. Many thanks again. Russ > On 20 Jan 2020, at 09:53, Daniele Romagnoli > <daniele.romagn...@geo-solutions.it> wrote: > > Hi, > If my memory serves me correctly, the imageMosaic could help with that. > you may consider trying to configure the file as an imageMosaic (even if it's > a single image) and use the ExpandToRGB flag. > https://docs.geoserver.org/latest/en/user/data/raster/imagemosaic/configuration.html > > <https://docs.geoserver.org/latest/en/user/data/raster/imagemosaic/configuration.html> > > > Basically: > - create a folder > - put your data inside that folder > - create an indexer.properties file in that directory with 1 line content ==> > ExpandToRGB=true > - create the imageMosaic coverage store by referring that folder and > configure the layer. > > With that flag, it should internally expand paletted imagery to RGB. > Let us know if that works. > > Regards, > Daniele > > > > On Sun, Jan 19, 2020 at 3:06 PM Andrea Aime <andrea.a...@geo-solutions.it > <mailto:andrea.a...@geo-solutions.it>> wrote: > Hi Ian, > I believe in practice we could consider expanding to RGB before we do > affine/warp operations > against indexed color model images, during rendering, that might provide > better output (in theory). > > At some point it was actually done (at least in part, I don't recall the > details), > but it was causing other issues: > https://osgeo-org.atlassian.net/browse/GEOT-6180 > <https://osgeo-org.atlassian.net/browse/GEOT-6180> > Given dedicated funding, we could research a different way of working on > color mapped images, that would allow > for improved quality output without incurring in the issues reported in > GEOT-6180. > > Cheers > Andrea > > On Sun, Jan 19, 2020 at 12:22 PM Ian Turton <ijtur...@gmail.com > <mailto:ijtur...@gmail.com>> wrote: > > That is the expected behaviour with a paletted image, the values of two > neighbouring pixels have no relationship to each other so any form of > averaging is going to produce a wrong result. > > You could convert them to be RGB images using GDAL (pct2rgb.py) but they will > still look a bit mushy when you average them. > > Ian > > On Sat, 18 Jan 2020 at 17:11, Russ Hore <r...@russ-hore.co.uk > <mailto:r...@russ-hore.co.uk>> wrote: > I have an issue if I set the WMS default interpolation to anything other than > “Nearest neighbour” and zoom in. > > OS : Ubuntu 19.01 > > > If I set the interpolation to Bilinear or Bicubic, at the same zoom level I > see; > > > > The back end tiles are generated from TIFF files using; > > gdalbuildvrt -a_srs EPSG:27700 outfile.vrt *tif > gdal_translate -of GTiff -r nearest -a_srs EPSG:27700 outfile.vrt > mergedfile.tif > > > > _______________________________________________ > 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> > > > Geoserver-users@lists.sourceforge.net > <mailto:Geoserver-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/geoserver-users > <https://lists.sourceforge.net/lists/listinfo/geoserver-users> > > > > -- > Ian Turton > _______________________________________________ > 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> > > > Geoserver-users@lists.sourceforge.net > <mailto:Geoserver-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/geoserver-users > <https://lists.sourceforge.net/lists/listinfo/geoserver-users> > > > -- > Regards, > Andrea Aime > == > GeoServer Professional Services from the experts! Visit http://goo.gl/it488V > <http://goo.gl/it488V> for more information. > == > > Ing. Andrea Aime > @geowolf > Technical Lead > > GeoSolutions S.A.S. > Via di Montramito 3/A > 55054 Massarosa (LU) > phone: +39 0584 962313 > fax: +39 0584 1660272 > mob: +39 339 8844549 > > http://www.geo-solutions.it <http://www.geo-solutions.it/> > http://twitter.com/geosolutions_it <http://twitter.com/geosolutions_it> > > > ------------------------------------------------------- > > Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE > 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa > che ogni circostanza inerente alla presente email (il suo contenuto, gli > eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i > destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per > errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei > comunque grato se potesse darmene notizia. > > This email is intended only for the person or entity to which it is addressed > and may contain information that is privileged, confidential or otherwise > protected from disclosure. We remind that - as provided by European > Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or > the information herein by anyone other than the intended recipient is > prohibited. If you have received this email by mistake, please notify us > immediately by telephone or e-mail. > _______________________________________________ > 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> > > > Geoserver-users@lists.sourceforge.net > <mailto:Geoserver-users@lists.sourceforge.net> > https://lists.sourceforge.net/lists/listinfo/geoserver-users > <https://lists.sourceforge.net/lists/listinfo/geoserver-users> > > > -- > Regards, > Daniele Romagnoli > == > GeoServer Professional Services from the experts! Visit http://goo.gl/it488V > <http://goo.gl/it488V> for more information. > == > > Ing. Daniele Romagnoli > Senior Software Engineer > > GeoSolutions S.A.S. > Via di Montramito 3/A > 55054 Massarosa (LU) > Italy > phone: +39 0584 962313 > fax: +39 0584 1660272 > > http://www.geo-solutions.it <http://www.geo-solutions.it/> > http://twitter.com/geosolutions_it <http://twitter.com/geosolutions_it> > > ------------------------------------------------------- > > Con riferimento alla normativa sul trattamento dei dati personali (Reg. UE > 2016/679 - Regolamento generale sulla protezione dei dati “GDPR”), si precisa > che ogni circostanza inerente alla presente email (il suo contenuto, gli > eventuali allegati, etc.) è un dato la cui conoscenza è riservata al/i solo/i > destinatario/i indicati dallo scrivente. Se il messaggio Le è giunto per > errore, è tenuta/o a cancellarlo, ogni altra operazione è illecita. Le sarei > comunque grato se potesse darmene notizia. > > This email is intended only for the person or entity to which it is addressed > and may contain information that is privileged, confidential or otherwise > protected from disclosure. We remind that - as provided by European > Regulation 2016/679 “GDPR” - copying, dissemination or use of this e-mail or > the information herein by anyone other than the intended recipient is > prohibited. If you have received this email by mistake, please notify us > immediately by telephone or e-mail. > _______________________________________________ > 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 > > > Geoserver-users@lists.sourceforge.net > 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 Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
