[Qgis-user] relative raster value color table in QGIS

[Otto Dassau]

Hi Paolo,

Am Mon, 14 Jul 2014 09:29:04 +0200
schrieb Paolo Cavallini <cavallini at faunalia.it>:

> Il 12/07/2014 12:56, Otto Dassau ha scritto:
> 
> > I would like to create a relative color table for raster data QGIS and
> > save them for other layers. Newly defined gradient color ramps end up in
> > a color table with fix values when I save it for a map.
> 
> Hi Otto,
> thanks for raising this question. AFAIK this is not easily done, and it
> should. In fact, also the reverse should be done: currently when applying
> a colour ramp to a raster, this gets stretched from min-max, which is not
> always appropriate (e.g. DTM ramps should be applied as absolute values.
> In short, I think we should extend our model for ramps, allowing users to
> define both absolute and relative ramps, both when creating and when
> applying them. GRASS could be a good guide for this.
> Better open tickets on this?
> All the best.

I opened a feature request for it. Maybe you can add your comment as well.

https://hub.qgis.org/issues/10886

Regards
Otto