[Qgis-user] Selecting displaced symbols

[Martin Bain]

Thanks for the discussion gentlemen.

I too think your idea is a good one Karl_Magnus.  Andreas, thanks for your suggestion with the info tool.  I set the mode to “Top Down stop at first” long ago and hadn’t changed it since.  Layer Choice works well in this situation and I didn’t realise the individual symbols are highlighted as you hover over the list.

Cheers,
Martin.


From: Neumann, Andreas [mailto:a.neumann at carto.net]
Sent: Tuesday, 30 May 2017 9:40 PM
To: Karl Magnus Jönsson <Karl-Magnus.Jonsson at kristianstad.se>
Cc: Martin Bain <Martin.Bain at lismore.nsw.gov.au>; qgis-user at lists.osgeo.org
Subject: Re: SV: [Qgis-user] Selecting displaced symbols


Hi Karl-Magnus,

I think this is a good idea. It could either be a separate selection mode (we already have different modes for selection on the drop-down button) or it could be toggled with a keyboard combination on the existing "click" mode. Can you open a feature request at https://issues.qgis.org/<http://issues.qgis.org/> ?

Greetings,

Andreas

On 2017-05-30 12:00, Karl Magnus Jönsson wrote:
Hi!
When talking about this. I've had a thought of improvement of the select tool. When there is several features in the same (or almost the same) location in one layer it is difficult to select one particular feature. Could we have the same functionality with select tool as with identify? Right click gets you a pull-down menu with potential features and you can select one from the list that gets selected. Understandable? Has this already been thought of? A workaround is to use the identify tool with right click. At the bottom of the list you can open the attribute table and select the desired features from the table. Works but one step more.

Karl-Magnus

Från: Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] För Neumann, Andreas
Skickat: den 30 maj 2017 11:11
Till: Martin Bain
Kopia: qgis-user at lists.osgeo.org<mailto:qgis-user at lists.osgeo.org>
Ämne: Re: [Qgis-user] Selecting displaced symbols


Hi Martin,

As far as I know, picking is totally independent of the rendering. So the "Info tool" doesn't know about the displacement renderer. I know it is not ideal, but it is a technical limitation and there are no known workarounds.

You can, however, display the central point (with a separate symbol) so the user knows where to pick. Also, you can easily access each individual point by changing the identify mode to "Layer choice" - where you get a pull-down menu and you can identify each individual point by its "display attribute".

Maybe a dev knows a solution to this problem - but currently I think there are no known workarounds.

Andreas

On 2017-05-30 03:39, Martin Bain wrote:
Hi,
I have the familiar situation of a layer with multiple points at the same coordinates.  The points have data defined SVG symbols

I'm using the Point Displacement renderer to overcome having overlapping symbols.  This definitely makes for an improved appearance.

However if you want to use the info tool or the select tool you cant click on the displaced symbol.  You can only select all points via the central point.

Is there a trick to select a point by its offset symbol instead of the true coordinates?  I have half a memory of reading something about this once before but maybe I imagined it :P

I would prefer to leave the points in their original position – the data is of traffic accidents, provided by the state government.

Thank you,
Martin.

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