[QGIS-Developer] Discussing default snapping and node editing settings

[Carlo A. Bertelli (Charta s.r.l.)]

If the most frequent case is snapping to the same or to one or two other
layers, is not a good idea to ask the user to resort to advanced settings.
The proposed idea to put the choice of  layers in the basic snapping
options seems a reasonable solution IMHO.
About WFS - but this is true for remote geodatabases with slow connections
- indexing should happen on the current canvas with a clear limit on zoom
level: snapping to at little scale is dangerous, you will never understand
if you snapped to the right now or to something that is hidden behind a
simplification artefact.
A possible solution is viewing an enlarged area about three or four times
the confidence circle and indexing inside it in real time.
c

Il mer 12 set 2018, 19:26 Denis Rouzaud <denis.rouzaud at gmail.com> ha
scritto:

> Hi Aurelio,
>
> That's what the advanced digitizing mode is made for, you can define per
> layer settings.
>
> Denis
>
> Le mer. 12 sept. 2018 à 13:13, Aurelio Pires <anvpires at gmail.com> a
> écrit :
>
>> Hi,
>>
>> Editing the active layer is appropriate, but you may need to snap to
>> another layer even if it is for reference.
>> The best would be for the user to be able to tell which layers to use as
>> a snap.
>>
>> APires
>>
>>
>> On 2018-09-12 15:57, Andreas Neumann wrote:
>>
>> Hi,
>>
>> I noticed that by default QGIS is set to edit ALL layers and also snaps
>> to ALL layer by default. I do think that this is a bad default setting,
>> esp. with larger projects.
>>
>> We had issues because users had WFS layers in their project (read only,
>> as reference) and QGIS tries to index these WFS layers and to get their
>> vertices in order to snap to them. Then QGIS hangs and freezes and there
>> are network time outs. Apparently one has to kill QGIS using the task
>> manager.
>>
>> I think the better default is to edit and snap only in the active layer
>> by default.
>>
>> Opinions?
>>
>> Andreas
>>
>>
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> --
>
> Denis Rouzaud
> denis at opengis.ch  <denis at opengis.ch>
> +41 76 370 21 22
>
>
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