[Qgis-developer] Multiband grey in master?

[HAUBOURG]

> So probably just a new options for multiband color and color data renderers
> should be implemented. 

Thanks radim for your feedback
Why not 'multiband gray' just like multiband color? It makes sense to me. 
Or maybe some users would rather have a checkbox 'show in grayscale' in multiband color screen. Other opinions? 
Régis

> -----Message d'origine-----
> De : Radim Blazek [mailto:radim.blazek at gmail.com]
> Envoyé : mardi 18 décembre 2012 16:49
> À : HAUBOURG
> Cc : qgis-developer at lists.osgeo.org
> Objet : Re: [Qgis-developer] Multiband grey in master?
> 
> On Tue, Dec 18, 2012 at 2:23 PM, haubourg <regis.haubourg at eau-adour-
> garonne.fr> wrote:
> > Hi all,
> > regarding to recent modifications in raster styling [0], I was
> > wondering if multiband grey is possible in QGIS.
> >
> > I usually have topo maps in RGB. It is very handy to switch them to
> > grayscale styling so that vector overlays are well highlighted. I
> > currently didn't find how to do this. I can only have grayscale for
> > one band. The result is not good since red , green or blue band
> > signals are really not supporting the right info. This is existing in
> > Mapinfo and other softs seamlessly.
> > Did I miss something?
> 
> Currently that is not possible, AFAIK. I am not sure where it should go. It may
> be also useful for color data sources (WMS). In theory it is possible to add a
> new filter implementing raster interface and plug it into the pipe after
> renderer, but it seems to be overkill too me.
> So probably just a new options for multiband color and color data renderers
> should be implemented.
> 
> Radim
> 
> >
> >
> > [0] http://hub.qgis.org/issues/6598 <http://hub.qgis.org/issues/6598>
> >
> >
> >
> > --
> > View this message in context:
> > http://osgeo-org.1560.n6.nabble.com/Multiband-grey-in-master-tp5023753
> > .html Sent from the Quantum GIS - Developer mailing list archive at
> > Nabble.com.
> > _______________________________________________
> > Qgis-developer mailing list
> > Qgis-developer at lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-developer