I found storing the footprints inside the raster data itself to be the
approach that makes the most sense.

Here's a section of the docs that explain it. I use internal makes with
geotiff tiles.

https://docs.geoserver.org/latest/en/user/tutorials/imagemosaic_footprint/imagemosaic_footprint.html#raster-masking

Jason Newmoyer
Newmoyer Geospatial Solutions
843.606.0424
ja...@newmoyergeospatial.com




On Mon, Aug 30, 2021 at 5:45 AM <dirk.thalh...@bkg.bund.de> wrote:

> Dear list,
>
> I'm creating an image pyramid for the usage in Geoserver with the image
> pyramid plugin. Beside the granule index I need a footprint to clip the
> granules by geometry. Per default image mosaics/pyramids in Geoserver are
> using shape files for the granule index and footprints. I want to store
> both due to performance issues and data handling within PostgreSQL/PostGIS.
>
> So far I could manage this for the granule index using a
> datasource.properties file within each level mosaic directory.
> Unfortunately this doesn't work for the footprints. There is a possibility
> to define a footprints.properties file, but as far as I can see it is only
> possible to set shape or WKT sources for the footprints. I could not find
> any further detailed documentation for the footprints.
>
> Currently I'm having a granule index in PostGIS and a footprint as shape.
> This feels very awkward and I think this might not be very performant when
> coming to lots of granules.
>
> So my question is: Is it possible to store the footpints for an image
> mosaic/pyramid within PostGIS? If not, are there better approaches for
> clipping (usage of NODATA is not possible)?
>
> Kind regards,
>
> Dirk
>
>
>
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Please make sure you read the following two resources before posting to this 
list:
- Earning your support instead of buying it, but Ian Turton: 
http://www.ianturton.com/talks/foss4g.html#/
- The GeoServer user list posting guidelines: 
http://geoserver.org/comm/userlist-guidelines.html

If you want to request a feature or an improvement, also see this: 
https://github.com/geoserver/geoserver/wiki/Successfully-requesting-and-integrating-new-features-and-improvements-in-GeoServer


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