[Qgis-user] Raster layer opacity expression - how does it work?

[DelazJ]

Hi,
And here's the feature in the changelog (
https://qgis.org/en/site/forusers/visualchangelog322/index.html#feature-data-defined-raster-layer-opacity);
afaict, it affects the whole layer and not pixel by pixel.

On a kind-of "off topic" request, I'd also be interested to see examples of
expressions playing with raster functions.

Regards,
Harrissou

Le lun. 6 déc. 2021 à 13:32, Johannes Kröger (WhereGroup) <
johannes.kroeger at wheregroup.com> a écrit :

> Anything that you can do with expressions, in this case to get a number
> between 0 and 100, but it will always affect the whole layer globally.
> You can not set a different opacity for different regions. For this,
> approaches like Ujaval's suggestion are probably the best way.
>
> Cheers
> Hannes
>
> > I'd still really like to know what can be done using an expression for
> > the Global Opacity of a raster layer.
>
> --
> Johannes Kröger / GIS-Entwickler/-Berater
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