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