On Mon, Jul 10, 2017 at 11:52 PM, Jody Garnett <[email protected]>
wrote:
> That is a great idea Andrea, nice to surface that functionality for
> per-request coverage access.
>
I've found a snag that I'm afraid will have to stay there.
The issue is, sortBy in WMS applies to raster and vector, and they both
have existing behavior for sorting... inconsistent with each other.
For raster data, what comes first wins, and stays on top, the other
granules pixels are not used (that's how it JAI mosaic works, and how
image mosaic "sorting" parameter has been working for years).
For vector data instead, painter's model, what comes first is painted
first, and then everything else on top. Again, pre-existing behavior
is already there as part of the painter model and the SLD vendor parameters
to control ordering.
This aligns with the general WMS behavior, it's the raster path that's
"odd", however in all dynamic sorting implementations (satellite
imagery mosaics typically) I've seen around, what comes first stays on top.
I guess we'll just have to document this clearly...
Cheers
Andrea
--
Regards,
Andrea Aime
==
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Ing. Andrea Aime
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