[OSGeo-Discuss] WCS/WMS accuracy tests?

Simone Giannecchini simone.giannecchini at geo-solutions.it
Wed Jan 27 10:50:42 PST 2010


Thx Chris,
I guess some magic with copy and paste happened before.

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 Wed, Jan 27, 2010 at 7:47 PM, Christopher Schmidt
<crschmidt at crschmidt.net> wrote:
> 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.giannecchini at geo-solutions.it
>> > To: discuss at 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.giannecchini at 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 at 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 at lists.osgeo.org
>> > > http://lists.osgeo.org/mailman/listinfo/discuss
>> > >
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>
> --
> Christopher Schmidt
> Web Developer
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