> Thanks David and Torben, this will be a little bit of a challenge to
> explain - one wrinkle that may be a challenge is calculating the bounds
> when one of these style groups is used.
>
> By calculating bounds, I assume you mean in the UI, when defining the
layer group. Off the top of my head, I can think of a couple options:
1. Use the CRS bounds of the LayerGroup when calculating bounds for one
of these groups (since they are ostensibly unknown, and subject to change)
2. Parse the layer names out of the linked style, and then calculate
bounds from there. Given that the calculated bounds for a layer group
typically must be changed manually when the layers change anyways, the fact
that these bounds may become out of date if the style changes seems fine,
and in line with the current behaviour.
Torben
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