On Mon, Apr 29, 2013 at 2:22 PM, Jonathan Moules <
[email protected]> wrote:
> Hi List,
> Is it possible to get GeoServer to return a sort of "no data" tile in
> response to TMS requests? As in, if there is no cached-tile, nor any data
> for that area to create a tile, it would return a stock default tile of my
> choosing?
>
Not with the current codebase.
Theoretically it would be possible to implement something like that, but
it's not entirely trivial,
as we don't do any preventive check of whether there is data on the area or
not before starting
to render (it would just slow down things).
That said, we already have some way to get notification that vector
features got rendered,
we'd have to use it to raise "no data" flags and compound it with some way
to discover
the lack of raster data.
Metatiling also makes things a bit more complicated, if you are rendering a
5x5 metatile that
only has data in the corner, the above approach won't tell you that, you'd
just know there
is some data somewhere inside the 5x5 block.
Cheers
Andrea
--
==
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==
Ing. Andrea Aime
@geowolf
Technical Lead
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