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

[Johannes Kröger (WhereGroup)]

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
WhereGroup GmbH
Eifelstraße 7
53119 Bonn
Germany

Tel: +49 (0)228 / 90 90 38 - 36
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johannes.kroeger at wheregroup.com
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