[Qgis-user] Problem display overlapping lines

[Nicolas Cadieux]

Hi,

It would be nice to have this QGIS.  My first reaction is to use line 
offset but the end result is not predictable. You may need to work with 
Python to do this.  You could also probably create a model.

If you need to identify the overlapping segments, you can use my Fix 
Directional Network model 1 to 3.  You can download this on the plugin 
page. 
https://plugins.qgis.org/models/?order_by=-upload_date&&is_gallery=true

The first model will check the Geometries.  Test with all default 
values.  After running this model, run the second model.  It should 
identify all partially overlapping lines.  This layer will be called 
"Potential Problem || Overlapping lines." You can open the second model 
and look at the "Find overlapping lines" algorithm to see how it's 
done.   It should find any overlapping or partially overlapping lines.

This video should help you figure things out. https://youtu.be/v61PafSByvM

It's not a total solution but it's at least a start!

Nicolas Cadieux


Le 2022-11-03 à 3:12 p.m., Bombonato Antonio Maria via Qgis-user a écrit :
>
> Hello,
>
> First of all, sorry for my english.
>
> My name is Antonio Bombonato and it is the first time I ask a question 
> to this mailing list.
>
> I have a shapefile with multiple routes (each one is identified by an 
> univoque OBJECT_ID) and some are partially overlapped (i.e they share 
> the same segment). I need to display these routes so they are all 
> visible and without overlapping.
>
> i tryed using line offset but some line still remains overlapped.
>
> Any idea to solve the problem, possibly using a python script, will be 
> appreciated.
>
> Attached the starting shapefile (cables) and the desired result I want 
> to obtain (target).
>
> In this case the shapefile target was created manually moving the 
> vertices of each line.
>
> P.S. I use 3.16.7-Hannover QGIS version
>
> Best regards,
>
> Antonio
>
> ****
>
> *Antonio Maria Bombonato*
>
> Software Developer
> Business Unit Ultra Broadband
>
> *Italtel S.p.A.*
>
> Via Caldera, 21
> 20153 Milano MI – Italy
>
> email: _antoniomaria.bombonato at italtel.com 
> <mailto:antoniomaria.bombonato at italtel.com>_
>
> P: +39 024388388
>
> www.italtel.com <http://www.italtel.com/>
>
>
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