[Qgis-user] Raster Layer Symbology Problem

[Sebastian Gutwein]

Martin,
I think this may be the result of the new feature
https://qgis.org/en/site/forusers/visualchangelog318/#feature-gradient-ramp-based-legends
Which is exciting for me becasue that is how I would like to have my
continious data display. But it sounds like that is not what you are
interested in. I have not tried 3.18 myself so don't know if there is a
workaround.
It does look like there are some links to discussions in the comments of
this stack exchange question.
gis.stackexchange.com/questions/388843/qgis-3-18-override-raster-gradient-legends
gis.stackexchange.com/questions/388154/how-to-get-back-discrete-raster-legend-symbols-in-qgis-3-16
twitter.com/ThomasG77/status/1365255399927140355


On Tue, Mar 9, 2021 at 7:54 AM Bernd Vogelgesang <bernd.vogelgesang at gmx.de>
wrote:

> Without testing I would say it's a bug. Quite some bugs went into 3.18
> unnoticed and unfortunately, it's not  communicated on the landing page.
> Next regular point release will be in 10 days, but for urgent stuff, you
> should better use 3.16.
>
>
> On 09.03.21 13:32, Martin Bittens wrot:
> > Hello QGIS User List, i
> >
> > I already sent this message but it was not posted, so it is here again.
> > Hopefully it works now.
> >
> >
> > I am still struggling with the problem creating a legend for a raster
> > layer. Usually I am working with the following settings in order to
> > colorize a calculated raster layer (e.g. after applying v.surf.idw on a
> > point data set):
> >
> > - rendering type: singleband pseudocolor
> >
> > - interpolation: linear
> >
> > - mode: equal interval
> >
> >
> > In QGIS 3.18.0:
> >
> > Selecting an appropriate color ramp and applying a classification in,
> > e.g., 5 classes, I see in the "Layer Properties - Symbology" window the
> > 5 colored classes separately and the corresponding 5 values (in my case
> > temperatures) for each color coding. But in the "Layer Panel" the legend
> > shows the color coding as a continuum and only the first and last value
> > of the value range appears. The same thing happens in the layout manager
> > when I create a layout for printing which includes a legend.
> >
> > In QGIS 3.16.4 LTR and previous versions:
> >
> > Doing the same I get the 5 color classes separately and the
> > corresponding values for each of the 5 classes in the "Legend Panel"as
> > well as in the layout manger.
> >
> >
> > My question: Is this a bug in the new QGIS version or does QGIS 3.18 not
> > provide this functionality anymore?
> >
> >
> > Thanks a lot for a comment.
> >
> >
> > Regards
> >
> >
> > Martin
> >
> >
> >
> > --
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