This idea would pair well with the style group concept, which defines a set
of layers and their styling. We just do not have a way presently to switch
between them.

Do keep in mind that layer groups are very simple right now and are pretty
much unpacked into GetMap request parameters. I am not sure about swapping
between different sets of layers (ie contents), as that starts to feel more
like defining a new layer group mode, rather than a styling of its contents.

I guess I will need to read your proposal to learn more.

Jody

On Thu, Sep 2, 2021 at 2:14 AM Marco Volpini <
[email protected]> wrote:

> Dear all,
>
> I would like to propose the addition of style support for LayerGroup.
> Please consider reviewing the proposal available here
> <https://github.com/geoserver/geoserver/wiki/GSIP-205>.
>
> The improvement aims to add a notion of style to LayerGroup as the
> possibility to define multiple sets of layers and styles as different named
> configurations.
> The various named configurations will be advertised in the WMS
> getCapabilities response as styles so that can be requested through the
> usage  of the styles parameter in WMS operations.
>
> Regards,
>
> Marco Volpini
>
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Jody Garnett
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