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Subject: Re: [QGIS-Developer] [Qgis-user] Issue with How Selected Features are Displayed When Overlapping
From: Bourdon, Jean-François (DIF) <Jean-Francois.Bourdon () mffp
Date: 2021-04-26 17:30:11
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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@mffp.gouv.qc.ca
mffp.gouv.qc.ca<http://www.mffp.gouv.qc.ca/accueil.jsp>
De : QGIS-Developer <qgis-developer-bounces@lists.osgeo.org> De la part de C Hamilton
Envoyé : 15 avril 2021 13:39
À : Nicolas Cadieux <njacadieux.gitlab@gmail.com>
Cc : qgis-user <qgis-user@lists.osgeo.org>; qgis-developer \
<qgis-developer@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@gmail.com<mailto:njacadieux.gitlab@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=http \
s%3A%2F%2Fgitlab.com%2Fnjacadieux&data=04%7C01%7C%7C2eca7a78da3248c916a408d900355756%7 \
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Le 15 avr. 2021 Ã 11:14, C Hamilton \
<adenaculture@gmail.com<mailto:adenaculture@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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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">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.<o:p></o:p></span></p> <p class="MsoNormal"><span \
style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><span style="mso-fareast-language:EN-US">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?<o:p></o:p></span></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto"><span \
style="color:black"><o:p> </o:p></span></p> <p class="MsoNormal" \
style="mso-margin-top-alt:auto"><b><span \
style="font-size:12.0pt;font-family:"Arial",sans-serif;color:black">Jean-François \
Bourdon, ing.f.</span></b><span \
style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><b><span \
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2E74B5">Analyste \
en télédétection</span></b><span \
style="font-size:10.0pt;font-family:"Arial",sans-serif"><br> <b><span \
style="color:#2E74B5">Direction des inventaires forestiers</span></b><br> <b><span \
style="color:#2E74B5">Ministère des Forêts, de la Faune et des Parcs</span></b><br> \
<span style="color:#2E74B5">5700, 4<sup>e</sup> Avenue Ouest, local A-108</span><br> \
<span style="color:#2E74B5">Québec (Québec) G1H 6R1</span><br> <span \
style="color:#2E74B5">Téléphone : <s>418 627-8669, poste 704304</s></span><br> \
<b><u><span style="color:#2E74B5">jean-francois.bourdon@mffp.gouv.qc.ca</span></u></b>
<br>
</span><a href="http://www.mffp.gouv.qc.ca/accueil.jsp"><b><span \
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#2E74B5">mffp.gouv.qc.ca</span></b></a><o:p></o:p></p>
<p class="MsoNormal"><span \
style="mso-fareast-language:EN-US"><o:p> </o:p></span></p> <p \
class="MsoNormal"><b><span lang="FR">De :</span></b><span lang="FR"> \
QGIS-Developer <qgis-developer-bounces@lists.osgeo.org> <b>De la part de</b> C \
Hamilton<br> <b>Envoyé :</b> 15 avril 2021 13:39<br>
<b>À :</b> Nicolas Cadieux <njacadieux.gitlab@gmail.com><br>
<b>Cc :</b> qgis-user <qgis-user@lists.osgeo.org>; qgis-developer \
<qgis-developer@lists.osgeo.org><br> <b>Objet :</b> Re: [QGIS-Developer] \
[Qgis-user] Issue with How Selected Features are Displayed When \
Overlapping<o:p></o:p></span></p> <p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">If there is a large cluster of points obscuring the selected \
point, even that method will not work.<o:p></o:p></p> <div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Has there been any interest in changing this behavior in \
QGIS?<o:p></o:p></p> </div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Thu, Apr 15, 2021 at 11:46 AM Nicolas Cadieux <<a \
href="mailto:njacadieux.gitlab@gmail.com">njacadieux.gitlab@gmail.com</a>> \
wrote:<o:p></o:p></p> </div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm \
6.0pt;margin-left:4.8pt;margin-right:0cm"> <div>
<p class="MsoNormal">Hi,<o:p></o:p></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Indeed... I usually select a \
thicker line for feature that are below. This way, I can see the selection even if \
it's hidden.<o:p></o:p></p> <div>
<p class="MsoNormal">Nicolas Cadieux<o:p></o:p></p>
<div>
<p class="MsoNormal"><a \
href="https://can01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.com%2Fn \
jacadieux&data=04%7C01%7C%7C2eca7a78da3248c916a408d900355756%7C8705e97737814f4790e \
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target="_blank">https://gitlab.com/njacadieux</a><o:p></o:p></p> </div>
</div>
<div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal" style="margin-bottom:12.0pt">Le 15 avr. 2021 Ã 11:14, C \
Hamilton <<a href="mailto:adenaculture@gmail.com" \
target="_blank">adenaculture@gmail.com</a>> a écrit :<o:p></o:p></p> \
</blockquote> </div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<p class="MsoNormal"><o:p></o:p></p>
<div>
<p class="MsoNormal">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.<o:p></o:p></p> <div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">I tested this in QGIS and the user was correct.<o:p></o:p></p>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Calvin<o:p></o:p></p>
</div>
</div>
</div>
<p class="MsoNormal">_______________________________________________<br>
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