Hi Andrew,
in geotools we call this issue "pixel is center" vs " pixel is corner".
OGC mandates the "pixel is center" interpretation as far as I know, see
also:
http://gis.stackexchange.com/questions/122670/is-there-a-standard-for-the-coordinates-of-pixels-in-georeferenced-rasters
http://mapserver.org/fr/development/rfc/ms-rfc-107.html
As far as I know, GeoTools tries to work "pixel is center" from beginning
to end, and there
are no ways to control that, also, WCS follows the OGC interpretation
strictly and does not
offer a way to return "pixel is corner" rasters, but I may be wrong.
I'm cc'ing Daniele, he should know more on this matter.
That said, especially in WCS 2.0, built to be extensible, one could put
together a vendor profile that allows controlling
the pixel interpretation for the outputs.
Cheers
Andrea
On Tue, Mar 31, 2015 at 11:28 PM, Andrew Annex <[email protected]> wrote:
> Hello GeoServer users,
>
> I am making wcs 1.0.0 requests for geotiffs against a coverage layer.
> Does GeoServer support returning geotiffs via wcs that are "Point"
> instead of "Area" pixels for the meta-data value: "AREA_OR_POINT"? This
> metadata field is further explained here:
> http://www.gdal.org/gdal_datamodel.html. By default the geotiff writer
> assumes area, and that writer appears to be used in the
> GeoTIFFCoverageResponseDelegate. Is there some way to set this as a hint
> in the wcs query url or is there something I can overwrite when
> extending the AbstractGridCoverage2DReader and/or the AbstractGridFormat
> so that the ResponseDelegate will pick up on that hint? Although it may
> not matter I am working with geoserver 2.5.2 / geotools 11.2.
>
> Also if this question is more appropriate for the geotools user list let
> me know.
>
> Thanks - Andrew
>
> --
> - Andrew Annex, Data Scientist.
> - (434)-284-9405 ext. 153
>
>
>
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