[Qgis-user] Adding topological vertices

[Jan Hartmann]

Hi Bernard, I downloaded QGIS 3.8.2, and now everything works perfectly. 
Not sure if I got it right in 3.8.1  Thanks!

Jan

On 8/14/2019 1:44 PM, Bernhard Ströbl wrote:
> Hi Jan,
> sorry I cannot reproduce the behaviour you describe in QGIS 3.4.10. Be 
> sure to read about the new vertex tool (and its changed behaviour 
> compared to 2.*) in the manual [1]
>
> Bernhard
>
> [1] 
> https://docs.qgis.org/3.4/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#vertex-tool
>
> Am 09.08.2019 um 14:35 schrieb Jan Hartmann:
>> Hi all,
>>
>> In QGIS 2 I could add a vertex on a segment shared by two polygons 
>> just by double-clicking on that segment. When topological editing was 
>> enabled, a new vertex was added to both polygons, and I could move 
>> them both just by dragging.
>>
>> In QGIS 3, when topological editing is enabled, moving a shared 
>> vertex is a bit more complex. I cannot just click on that vertex and 
>> then click on the destination location, for then only one of the 
>> shared vertices is moved. I have to shift-drag around the vertex, 
>> then click on the selected vertices, and only then all shared 
>> vertices are moved. No problem with that, by the way.
>>
>> The real problem is when I want to add a vertex on a shared segment. 
>> When I double-click on that segment, a new vertex appears, but only 
>> on one of the segments. I can move that vertex, but only one segment 
>> is moved. The underlying segments remain in place. To move them too, 
>> I have to create vertices on all of them, and move them all to the 
>> new location. This *is* a problem.
>>
>> Is there a solution for this? Do I overlook something?
>>
>> Regards,
>>
>> Jan Hartmann
>> Amsterdam
>>
>>
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