On Fri, Jul 12, 2013 at 8:52 AM, Andrea Aime
<andrea.a...@geo-solutions.it>wrote:
> On Thu, Jul 11, 2013 at 5:40 PM, Justin Deoliveira
> <jdeol...@opengeo.org>wrote:
>
>> Hi all,
>>
>> To go along with the geopkg module just added to geotools we have also
>> developed an output format for geoserver capable of producing a geopackage
>> file from a wms request. I would like to add it as a community module.
>>
>> The code is up in my github repo.
>>
>> https://github.com/jdeolive/geoserver/compare/geopkg
>>
>>
> +1 on the module
> As a curiosity, why wms? Is this going to produce tiles in the geopackage?
> Or does the geopackage embed styles as well?
> I guess the real question is, why wms and not wfs output format?
>
>
Probably should have both, like you did with KML recently.
GeoPackage is actually a few things - a package. I've been on most of the
calls in the last few months. And tried to get it split up in to multiple
specs, but that was one I didn't mange to pull off. So the two main things
it contains are tiles and vectors. So tiles contain rendered tiles. It's
similar to MBTiles, but you can have multiple tile sets, and do projections
other than web mercator.
Features is a wkb based binary format. I guess in the next testbed they're
going to think more about the service interface. Does seem like it'd be
useful on the wms side to be able to ask for tiles or features or both for
any vector layers. Rasters should be tiles, though we can also experiment
with putting raster blobs directly in sqlite tables. Originally 'rasters'
was a type as well, but we cut that out as it wasn't thought out well
enough, but left a spot where one could put it. So eventually we could
maybe do some format options to specify if you want raw data, tiles, or
both.
But doing a WFS output format would make good sense, as that would indicate
that you just want features - you'd always get a features only package when
requesting from WFS.
> Cheers
> Andrea
>
>
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