[Qgis-user] Geometries of labels - automatic positioning (no covering)

[Matej Mailing]

Hello Regis,

I cannot find that option you mention: "the placement option "always
displays" on the layers"

I seem to have checked all the options - I am using QGIS 3.16.3.

Thanks,
Matej

V V pet., 5. feb. 2021 ob 15:20 je oseba Régis Haubourg
<regis.haubourg at gmail.com> napisala:
>
> Back on the mailing list.
>
> mm, so you want to force labels on all features right, especially on
> crowded locations?
>
> Did you try the placement option "always displays" on the layers you
> want to force?
>
> I you get a screenshot, that would help
>
> Best
>
> Régis
>
> On 05/02/2021 13:53, Matej Mailing wrote:
> > Hi,
> >
> > I would like that the collision engine positions all the labels of
> > selected layers at every scale. I am aware that I can play with the
> > labeling priorities, but when there are two geometries, for example
> > short line and a long line in case of roads or some crossings, there
> > are locations on the map where a large number of labels should be
> > visible and I cannot get a result that all of the labels are visible
> > generally no matter what fixed positions are and their priorities.
> >
> > I need to plot out the map at the fixed scale and have all the labels
> > of the selected layers visible at that scale in this scenario. I don't
> > mind their exact location, just that they have to be visible and not
> > covered by each other. The labels are from a number of layers and
> > represent different types of information (i.e. road names, blocks,
> > crossing names etc.) and I need them to be positioned in a way they
> > are all always visible, which is currently impossible as a small
> > crossing is such a small geometry that is covered with labels from
> > other objects although trying all the priority combinations.
> >
> > Maybe the scale parameter isn't important in this equation as I am
> > thinking now as if enabled, this feature would simply work at all the
> > scales :)
> >
> > Hopefully I was able to define this clear enough. If not, please let me know ;)
> >
> > Thanks,
> > Matej
> >
> > V V pet., 5. feb. 2021 ob 13:20 je oseba Régis Haubourg
> > <regis.haubourg at gmail.com> napisala:
> >> Hi,
> >>
> >> I'm not sure I get correctly what you mean here. You would like the
> >> collision engine to take into account a subset of selected layers? How
> >> would you select them ? Are you aware that you can already play with
> >> labeling priorities on a layer level, and also use some layers to block
> >> labeling on its features.
> >>
> >> Let us know a bit more precisely how you see it.
> >>
> >> Best regards
> >>
> >> Régis
> >>
> >>
> >> On 05/02/2021 13:14, Matej Mailing wrote:
> >>> Hello Regis,
> >>>
> >>> thank you for the clarification. What would help very much would be an
> >>> optional input to the collision engine to execute itself for the
> >>> labels of the selected layers at the selected scale. The result would
> >>> then, if I understand correctly, mean that no labels of the selected
> >>> layers cover each other at that scale. Would that make sense?
> >>>
> >>> Thanks,
> >>> Matej
> >>>
> >>>
> >>> V V pet., 29. jan. 2021 ob 18:20 je oseba Régis Haubourg
> >>> <regis.haubourg at gmail.com> napisala:
> >>>> Hi Matej,
> >>>>
> >>>> There is no geometry stored for labels, it is all up to the collision
> >>>> engine to compute on the fly for each context where to draw labels.
> >>>>
> >>>> You can "pin" labels, and a XY location is stored then, either in the
> >>>> dataset if you set dedicated fields in the advanced labeling options,
> >>>> and your layer is editable, Or in the auxiliary database (a sqlite .qgd
> >>>> side car file) linked to your layer.
> >>>>
> >>>> You can access the auxiliary data in the layer properties.
> >>>>
> >>>> Last option I know of, you can use geometry generators to provide
> >>>> "paths" for labels. Ex: smoothen a sharp line with some smooth /
> >>>> generalize expressions so that the curved labels are better looking.
> >>>>
> >>>>
> >>>> Best regards
> >>>>
> >>>> Régis
> >>>>
> >>>> On 19/01/2021 15:41, Matej Mailing wrote:
> >>>>> Hello,
> >>>>>
> >>>>> where are the geometries of the labels stored in the 3.16.x branch?
> >>>>>
> >>>>> We would like to get them to PostGIS to autmatically manipulate the
> >>>>> positions in a way that the labels do not cover each other in a
> >>>>> smaller scale, i.e. 1:1000. Or is there any plugin that would do this?
> >>>>>
> >>>>> Thanks,
> >>>>> Matej
> >>>>> _______________________________________________
> >>>>> Qgis-user mailing list
> >>>>> Qgis-user at lists.osgeo.org
> >>>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >>>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >>>> _______________________________________________
> >>>> Qgis-user mailing list
> >>>> Qgis-user at lists.osgeo.org
> >>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user