Hello Andrea,
yes, I did. But I send it again:
I requested in GK3:
SUBSET=Y,http://www.opengis.net/def/crs/EPSG/0/31467(3400000,3420000)&SUBSET=X,http://www.opengis.net/def/crs/EPSG/0/31467(5660000,5680000)
AND set the crs to be the same:
&SUBSETTINGCRS=http://www.opengis.net/def/crs/EPSG/0/31467
&OUTPUTCRS=http://www.opengis.net/def/crs/EPSG/0/31467
Should be 3400000, 5660000 to 3420000, 5680000
But GeoServer returned:
3399999.6508074491284788,5659999.2086437549442053 :
3419997.6992640472017229,5680002.2594826966524124
I just don’t understand why the extent is wrong AND the pixel size and
dimension. I understand that there are different distortions depending on the
projection.
But how could I get the bounding box I requested?
@Jukka: Thanks for the hint with the Scaleextent – I give it a try… I just
wanted to avoid to clip the image again to the requested extend.
Von: andrea.a...@gmail.com [mailto:andrea.a...@gmail.com] Im Auftrag von Andrea
Aime
Gesendet: Freitag, 11. August 2017 14:04
An: Hock, Anna-Lena <anna-lena.h...@bkg.bund.de>
Cc: Rahkonen Jukka (MML) <jukka.rahko...@maanmittauslaitos.fi>; GeoServer
Mailing List List <geoserver-users@lists.sourceforge.net>
Betreff: Re: [Geoserver-users] WCS returns wrong GeoTiffs
On Fri, Aug 11, 2017 at 1:45 PM,
<anna-lena.h...@bkg.bund.de<mailto:anna-lena.h...@bkg.bund.de>> wrote:
As far as I can interpret this, it means that in case we have OUTPUTCRS equals
SUBSETTINGCRS the extent of the image should be exactly the one requested in
SUBSET. The request coordinates aren’t transformed – the bounding box is
“fixed” and the image is filled in this extent. If you vary the dimension and
the size, then it should be possible to keep the requested extent. Am I missing
something here?
Hum... you did not provide the output bounding box, in your first mail you were
concerned about the resolution and pixel width/height only no?
What bounding box did GeoServer return?
During reprojection with no target resolution normally one can choose to
respect either the native resolution (it seems GeoServer did,
to the letter, taking into account the different scaling factor of the two
projections) or the target bounding box, but it's impossible in
general to do both.
Looking again at the specification extracts from Jukka I don't see a indication
that one should be preferred over the other, looks
like an implementation decision.
Cheers
Andrea
--
Regards,
Andrea Aime
==
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Ing. Andrea Aime
@geowolf
Technical Lead
GeoSolutions S.A.S.
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