Martin, The link that Alessandro provided was indeed the ability to revert back to the previous discrete method. https://github.com/qgis/QGIS/pull/42193 As the pull request has a Backport 3.18 flag on it I assume that that means that for the 3.18.1 release next week there should be the ability to turn off continuous raster legend! -Bas
On Fri, Mar 12, 2021 at 6:30 AM Martin Bittens <[email protected]> wrote: > Hello Sebastian, > > thank you for your response. Yes indeed, for me the coloring style you > showed would be an option. This style is what I get in GRASS GIS as well. > But😁, > > what I would prefer in QGIS is this (as provided by QGIS 3.16.4 LTR): > > > So I hope that in future QGIS versions, the user will have the choice > between the different display options. As far as I understood the > discussions in the links you sent there is something going on in order to > add an option for selecting the new or the old display style. > Unfortunately, I am not an expert in that programming stuff and therefore I > don't know how to apply what there is explained. I will wait and see what > the next QGIS versions offer for displaying raster gradient legends. And I > will keep the QGIS 3.16.4 LTR with special care not loosing the display > style I showed above. > > > Regards > > > Martin > > > Am 3/10/2021 um 5:54 PM schrieb Sebastian Gutwein: > > Martin, > I agree with your assessment. > I assume the assumption of the designers (thank you Nyall Dawson et al for > all of your amazing work) was that if you were displaying a > continuous raster you would want a continuous legend as well. > As shown by your issue and in the links I shared with you the reality is > that this doesn't fit all use cases. > I am considering writing up a feature request to address those issues. > Unless you want to? > To help me understand your use case more would a legend that was > continuous but had numerical values at each "break" work for you? An > example of this is in this tutorial > https://www.ecodiv.earth/post/legend-for-continuous-raster-in-qgis-composer/ > [image: image.png] > > -Bas > > On Wed, Mar 10, 2021 at 2:34 PM Martin Bittens <[email protected]> > wrote: > >> Sebastian, Bernd, >> >> thanks a lot for your response. I checked the links Sebastian sent. As >> far as I could see displaying data in the legend as a continuum is a new >> feature in QGIS 3.18 which replaced the previous method displaying data in >> the legend as categories (as QGIS 3.16.4 is still doing - fortunately. >> Otherwise it would be difficult producing maps in ongoing projects in a >> consistent layout). And obviously there is no option available switching >> between the old and the new display method. Personally I think it was not a >> good decision giving up completely the categorical display in the legend. >> In particular if you would work with multiple colors and a large range of >> values, there is no way to allocate map colors to the corresponding values, >> or vice versa. >> >> So, I hope that the next QGIS version will include an option which allows >> selecting the method how to display the data, as continuum or categorized. >> >> >> Regards >> >> Martin >> >> >> Am 3/9/2021 um 4:18 PM schrieb 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 < >> [email protected]> 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 >>> > >>> > >>> > >>> > -- >>> > This email has been checked for viruses by Avast antivirus software. >>> > https://www.avast.com/antivirus >>> > >>> > _______________________________________________ >>> > Qgis-user mailing list >>> > [email protected] >>> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> _______________________________________________ >>> Qgis-user mailing list >>> [email protected] >>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user >>> >> >> >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon> >> Virus-free. >> www.avast.com >> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link> >> <#m_-6080608085260119138_m_726336712862281711_DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> >> >
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