[Qgis-developer] Map composer legend item transparency

[John C. Tull]

I saw some maps recently, presumably from ArcGIS, that had the vector  
transparency with a tiny sample of the underlying hillshade beneath.  
This would handle your concern for drapes, but would not account for  
multiple vector overlays. I think just having the vector transparency  
alone would be an improvement.

John

On Mar 13, 2009, at 3:59 PM, Andreas Neumann wrote:

> yes, I had a similar issue with some of my projects. But I don't  
> know if it is very easy to solve? Potentially, there could be many  
> layers with different transparency settings interacting with each  
> other. Think of a transparent layer on a transparent layer on a  
> transparent layer on a hillshade ... What should the legend do in  
> this case?
>
> It is definitely worth some thinking of course, since it is a real  
> problem in the legend ... How do other GIS solve the problem?
>
> Andreas
>
> John C. Tull wrote:
>> Marco,
>>
>> Is there a possibility to have the composer legend show vectors  
>> layers with the level of transparency in the map canvas. For  
>> instance, I have a land ownership layer that I drape over a  
>> hillshade. I set this layer to 50% transparency, but the map legend  
>> shows them at 100%. The colors can look quite different in the map  
>> and the legend as a consequence.
>>
>> Hopefully this is doable. I think it would be a good improvement.  
>> I'll throw it in trac if you need, but will await your response  
>> first.
>>
>> Cheers,
>> John
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