I think the goal of this entire email exchange was to try and understand a bit better where this problem was coming from. I gave my contribution on the software I manage, I won't into gdal/mapserver/qgis, I was hoping to get some feedback from their communities.
Cheers, Simone ------------------------------------------------------- Ing. Simone Giannecchini GeoSolutions S.A.S. Founder - Software Engineer Via Carignoni 51 55041 Camaiore (LU) Italy phone: +39 0584983027 fax: +39 0584983027 mob: +39 333 8128928 http://www.geo-solutions.it http://geo-solutions.blogspot.com/ http://www.linkedin.com/in/simonegiannecchini http://twitter.com/simogeo ------------------------------------------------------- On Thu, Jan 28, 2010 at 12:22 AM, Pablo Carreira <pablotcarre...@hotmail.com> wrote: > > BTW, The possibility of the problem is in Qgis and not the server has been > contemplated in this investigation? > > Pablo Torres Carreira > > > >> Date: Wed, 27 Jan 2010 13:47:46 -0500 >> From: crschm...@crschmidt.net >> To: discuss@lists.osgeo.org >> Subject: Re: [OSGeo-Discuss] WCS/WMS accuracy tests? >> >> On Wed, Jan 27, 2010 at 04:35:59PM -0200, Pablo Carreira wrote: >> > >> > Hi Simone, >> > The issue >> > http://jira.codehaus.org/browse/GEOS-3702217is not avaliable. >> >> http://jira.codehaus.org/browse/GEOS-3702 >> >> > >> > Pablo Torres Carreira >> > >> > >> > >> > >> > > Date: Wed, 27 Jan 2010 18:39:51 +0100 >> > > Subject: Re: [OSGeo-Discuss] WCS/WMS accuracy tests? >> > > From: simone.giannecch...@geo-solutions.it >> > > To: discuss@lists.osgeo.org >> > > >> > > Hi there, >> > > any feedback on this from the gdal/mapserver folks? >> > > Anyone looked into my findings? >> > > >> > > Simone. >> > > ------------------------------------------------------- >> > > Ing. Simone Giannecchini >> > > GeoSolutions S.A.S. >> > > Founder - Software Engineer >> > > Via Carignoni 51 >> > > 55041 Camaiore (LU) >> > > Italy >> > > >> > > phone: +39 0584983027 >> > > fax: +39 0584983027 >> > > mob: +39 333 8128928 >> > > >> > > >> > > http://www.geo-solutions.it >> > > http://geo-solutions.blogspot.com/ >> > > http://www.linkedin.com/in/simonegiannecchini >> > > http://twitter.com/simogeo >> > > >> > > ------------------------------------------------------- >> > > >> > > >> > > >> > > On Thu, Dec 10, 2009 at 11:45 PM, Simone Giannecchini >> > > <simone.giannecch...@geo-solutions.it> wrote: >> > > > >> > > > Dear All, >> > > > I have spent some time investigating this isue with GeoServer trunk. >> > > > >> > > > Here: >> > > > >> > > > http://jira.codehaus.org/browse/GEOS-3702217 >> > > > >> > > > you can find a quick detailed report. I am particularly interested >> > > > in FrankW >> > > > feedback. >> > > > >> > > > >> > > > Ciao, >> > > > Simone >> > > > >> > > > Steven M. Ottens wrote: >> > > >> >> > > >> >> > > >> On Dec 7, 2009, at 5:47 PM, Stephen Woodbridge wrote: >> > > >> >> > > >>> Steven M. Ottens wrote: >> > > >>>> >> > > >>>> I know there have been speed tests between different WMS >> > > >>>> services, >> > > >>>> but I'm wondering has there been any data-quality/accuracy test >> > > >>>> been >> > > >>>> done between WMS and/or WCS services? >> > > >>> >> > > >>> I wonder if this is the difference between pixel as a point versus >> > > >>> pixel >> > > >>> as an area. Mapserver uses gdal to handle GeoTiff files and Frank >> > > >>> has put >> > > >>> a lot of effort in Gdal to handle this correctly. >> > > >>> >> > > >> That's our feeling as well. Andrea mentioned that there's an issue >> > > >> with >> > > >> different interpretations on the location of a pixel (centre vs. >> > > >> top-left). >> > > >> >> > > >>> Also, I'm surprised that there is any shift in mapserver because I >> > > >>> do not >> > > >>> think mapserver reprojects data if the in and out projections are >> > > >>> the >> > > >>> same. I can speak for the other services as I don't know how they >> > > >>> work. >> > > >> >> > > >> I'll be doing more detailed tests tomorrow and will post an >> > > >> overview then >> > > >> with the exact versions and configurations and results if people >> > > >> want to >> > > >> reproduce them. I f people have suggestions for specific tests or >> > > >> configurations I'm happy to apply those if possible. >> > > >> >> > > >> Going to test with the latest Geoserver nightly, Mapserver >> > > >> 5.6.0-rc1, >> > > >> Deegree 2.3 rc1 on a windows 2003 machine. With two different >> > > >> GeoTIFFs >> > > >> (one in epsg:4326 and one in epsg:3035) >> > > >> >> > > >> Steven_______________________________________________ >> > > >> Discuss mailing list >> > > >> Discuss@lists.osgeo.org >> > > >> http://lists.osgeo.org/mailman/listinfo/discuss >> > > >> >> > > >> >> > > > >> > > > -- >> > > > View this message in context: >> > > > http://n2.nabble.com/WCS-WMS-accuracy-tests-tp4127002p4148407.html >> > > > Sent from the OSGeo Discuss mailing list archive at Nabble.com. >> > > > _______________________________________________ >> > > > Discuss mailing list >> > > > Discuss@lists.osgeo.org >> > > > http://lists.osgeo.org/mailman/listinfo/discuss >> > > > >> > > _______________________________________________ >> > > Discuss mailing list >> > > Discuss@lists.osgeo.org >> > > http://lists.osgeo.org/mailman/listinfo/discuss >> > >> > _________________________________________________________________ >> > Sabia que você tem 25Gb de armazenamento grátis na web? Conheça o >> > Skydrive agora. >> > >> > http://www.windowslive.com.br/public/product.aspx/view/5?ocid=CRM-WindowsLive:produtoSkyDrive:Tagline:WLCRM:On:WL:pt-BR:SkyDrive >> > _______________________________________________ >> > Discuss mailing list >> > Discuss@lists.osgeo.org >> > http://lists.osgeo.org/mailman/listinfo/discuss >> >> >> -- >> Christopher Schmidt >> Web Developer >> _______________________________________________ >> Discuss mailing list >> Discuss@lists.osgeo.org >> http://lists.osgeo.org/mailman/listinfo/discuss > > ________________________________ > Quer ver seus e-mails de todas as contas num lugar só? Junte todas elas no > Hotmail. > _______________________________________________ > Discuss mailing list > Discuss@lists.osgeo.org > http://lists.osgeo.org/mailman/listinfo/discuss > > _______________________________________________ Discuss mailing list Discuss@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/discuss