[QGIS-Developer] [Qgis-user] Issue with How Selected Features are Displayed When Overlapping

[Bourdon, Jean-François (DIF)]

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I'm also interested to be able to see selected features even when hiden by others. When working with polygons only represented by a contour line, you can completly miss a selected polygon if all other contiguous features are drawn after the selected one. A workaround I found for features within the same layer is to change the rendering order by using the expression is_selected() in ascending order (Layer Properties -> Symbology -> Layer Rendering -> Control feature rendering order). Hovewer, this needs to be done each time a layer is added and won't help if an other layer is on top and hide the feature you selected.

Is it possible to control the rendering order of features independently from their own layer so that all selected features from any layer could be repainted last to appear on top of everything else?

Jean-François Bourdon, ing.f.
Analyste en télédétection
Direction des inventaires forestiers
Ministère des Forêts, de la Faune et des Parcs
5700, 4e Avenue Ouest, local A-108
Québec (Québec) G1H 6R1
Téléphone : 418 627-8669, poste 704304
jean-francois.bourdon at mffp.gouv.qc.ca
mffp.gouv.qc.ca<http://www.mffp.gouv.qc.ca/accueil.jsp>

De : QGIS-Developer <qgis-developer-bounces at lists.osgeo.org> De la part de C Hamilton
Envoyé : 15 avril 2021 13:39
À : Nicolas Cadieux <njacadieux.gitlab at gmail.com>
Cc : qgis-user <qgis-user at lists.osgeo.org>; qgis-developer <qgis-developer at lists.osgeo.org>
Objet : Re: [QGIS-Developer] [Qgis-user] Issue with How Selected Features are Displayed When Overlapping

If there is a large cluster of points obscuring the selected point, even that method will not work.

Has there been any interest in changing this behavior in QGIS?

On Thu, Apr 15, 2021 at 11:46 AM Nicolas Cadieux <njacadieux.gitlab at gmail.com<mailto:njacadieux.gitlab at gmail.com>> wrote:
Hi,
Indeed... I usually select a thicker line for feature that are below. This way, I can see the selection even if it’s hidden.
Nicolas Cadieux
https://gitlab.com/njacadieux<https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.com%2Fnjacadieux&data=04%7C01%7C%7C2eca7a78da3248c916a408d900355756%7C8705e97737814f4790e1c84c8b884da1%7C0%7C1%7C637541051362979687%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=%2FmyTzn9OwXB46gYQf1B2pMplGpkdubok%2B%2FkUQ0bs%2FYo%3D&reserved=0>


Le 15 avr. 2021 à 11:14, C Hamilton <adenaculture at gmail.com<mailto:adenaculture at gmail.com>> a écrit :

I have a user complaint with QGIS who explained that when point features overlap and one is selected from  the attribute table but is underneath other features, you cannot see it highlighted because it is covered by other points. Is there any way to have it show that there is a highlighted feature there even though it is underneath non-highlighted features? In ArcMap the highlights are always shown on the top level of the canvas even if they are covered by non-highlighted features.

I tested this in QGIS and the user was correct.

Thanks,

Calvin
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