[Qgis-user] Saving a polygon in QGis before to edit it
Matthias Kuhn
matthias at opengis.ch
Mon Jul 20 04:31:31 PDT 2015
Yeah, I remember that as well.
But the boundless project page redirects here:
https://github.com/locationtech/geogig
and there is still some recent activity, so maybe it's not completely dead?
Matthias
On 07/20/2015 01:28 PM, Neumann, Andreas wrote:
>
> Hi,
>
> As far as I know, the geogit project was canceled by Boundless. They
> did not see enough customer demand to finish it.
>
> It is a pity, as the project was relatively close to completion.
>
> Andreas
>
> On 2015-07-20 13:05, Matthias Kuhn wrote:
>
>> Hi,
>>
>> I remember geogig (formerly geogit) offers promising concepts for
>> filebased spatial data management with historization and branching.
>> Unfortunately I don't know the current status of the project and the
>> progress of integration in QGIS.
>>
>> Matthias
>>
>> On 07/20/2015 11:25 AM, Neumann, Andreas wrote:
>>>
>>> Hi Didier,
>>>
>>> I don't think that anyone is working on a client-side historisation
>>> option in QGIS. And there wasn't much demand for that in the past,
>>> since most serious GIS data resides in databases.
>>>
>>> Andreas
>>>
>>> On 2015-07-20 09:45, didier peeters wrote:
>>>
>>> Hello Andreas,
>>>
>>> yes it's for some 'historisation', more precisely to make a
>>> filiation, and yes I certainly will use triggers in PostGIS.
>>> But I wanted to avoid confusion between different kind of
>>> edition operations that I'm not currently foreseeing; I'm not
>>> sure it will always be easy to distinct this specific action
>>> from others. And I thought that it might also be interesting
>>> outside of the database world, to have that "edit and preserve"
>>> operation.
>>>
>>> Didier
>>>
>>> Le 20 juil. 2015 à 09:10, Neumann, Andreas
>>> <a.neumann at carto.net <mailto:a.neumann at carto.net>> a écrit :
>>>
>>> Hi Didier,
>>>
>>> Is this for historisation purposes? If yes, I would look
>>> into database solutions to do historization.
>>>
>>> The SQL-MM standard has this as a built-in tool set for
>>> databases, however, PostgreSQL does not implement this part
>>> of the SQL specification (I believe the latest versions of
>>> SQL server and Oracle 12 does). However, you can simulate
>>> the same in Postgis, using triggers and rules.
>>>
>>> Andreas
>>>
>>> On 2015-07-20 08:00, didier peeters wrote:
>>>
>>> Hello,
>>>
>>> I would like to find the best solution to the following
>>> case:
>>>
>>> in QGis, when editing a polygon (splitting it in 2
>>> parts) I need to save the original shape, in order to
>>> keep the different steps of its evolution; this
>>> operation is likely to be repeated several times. The
>>> solution I found is to
>>>
>>> * start by copying the polygon,
>>> * then edit it (split)
>>> * then pasting back the original one,
>>> * then adjust and update the attributes of the 2 new
>>> polygons.
>>>
>>>
>>> Is there a less tricky way to achieve this ?
>>>
>>> If not it would be nice to have an option in the save
>>> dialog (with a default behaviour set in the Settings),
>>> and I would file a feature request.
>>>
>>> Didier
>>>
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