Thanks Daniele, Here are my tests based on the information you gave me. I will try to update my unit tests to reflect that and make sure it works, but it seems like your suspicion is correct.
Thanks again, Ariel. >>> pixel = 0.011200000000000 >>> expected_origin = (105.298569999999998,-5.565233000000000) >>> received_origin = (105.30417, -5.570833) >>> difference = received_origin[0] - expected_origin[0] >>> pixel / 2 0.0055999999999999999 >>> difference 0.0056000000000011596 On Wed, Jun 1, 2011 at 12:57 PM, Daniele Romagnoli <[email protected]> wrote: > Hi Ariel, > Not sure if I'm totally wrong but maybe it could be a simple pixel CENTER vs > pixel CORNER difference. > > Usually gdalinfo shows the coordinate of the corner of the pixel. Not sure > whether the origin in describeCoverage is referred to the center too or to > the corner. > Could you check whether the difference between the value you see on WCS and > the value reported by gdal is equal to half pixel resolution? > > Daniele > > > On Wed, Jun 1, 2011 at 6:05 PM, Ariel Nunez <[email protected]> > wrote: >> >> Hello list, >> >> We are using GeoServer for impact calculations and noticed that the >> GeoServer WCS module is not able to report the origin attribute with >> sufficient precision (for our application) We expected (105.29857, >> -5.56523) but got (105.30417, -5.570833). >> >> Has anyone experienced a similar issue? What's a good way to start >> debugging this? >> >> Ariel. >> >> More details and a script to reproduce it (including sample data) below: >> >> https://gist.github.com/825323 >> >> Using the following version of GeoServer >> version = 2.2-SNAPSHOT >> svn revision = 15968 >> build date = 01-Jun-2011 03:32 >> geotools version = 8-SNAPSHOT >> geotools revision = 37354 >> hudson build = 725 >> >> Origin obtained using gdalinfo in the original file: >> Origin = (105.298569999999998,-5.565233000000000) >> >> Origin obtained using WCS DescribeCoverage in the original file: >> <gml:pos>105.30417 -5.570833</gml:pos> >> >> >> ------------------------------------------------------------------------------ >> Simplify data backup and recovery for your virtual environment with >> vRanger. >> Installation's a snap, and flexible recovery options mean your data is >> safe, >> secure and there when you need it. Data protection magic? >> Nope - It's vRanger. Get your free trial download today. >> http://p.sf.net/sfu/quest-sfdev2dev >> _______________________________________________ >> Geoserver-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/geoserver-users >> > > > > -- > ------------------------------------------------------- > Ing. Daniele Romagnoli > GeoSolutions S.A.S. > Software Engineer > > Via Poggio alle Viti 1187 > 55054 Massarosa (LU) > Italy > > phone: +39 0584 962313 > fax: +39 0584 962313 > > http://www.geo-solutions.it > http://geo-solutions.blogspot.com/ > http://www.youtube.com/user/GeoSolutionsIT > http://it.linkedin.com/in/danieleromagnoli > > > ------------------------------------------------------- > > ------------------------------------------------------------------------------ Simplify data backup and recovery for your virtual environment with vRanger. Installation's a snap, and flexible recovery options mean your data is safe, secure and there when you need it. Data protection magic? Nope - It's vRanger. Get your free trial download today. http://p.sf.net/sfu/quest-sfdev2dev _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
