Re: [QGIS-Developer] EditInPlace Processing script

[matteo]

Hi Germàn,

> the sample script I mentioned in my previous e-mail in this thread
> should be working on master now. Nyall fixed the bug reported.

awesome! Thanks to you and to Nyall!

Cheers

Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[Germán Carrillo]

Hi Matteo,

the sample script I mentioned in my previous e-mail in this thread
should be working on master now. Nyall fixed the bug reported.

Regards,

Germán

El mar., 21 abr. 2020 a las 1:45, matteo ()
escribió:

> Hi Stefanos,
>
> yep, but digging into this I was wondering how to use the EditInPlace
> also for scripts :)
>
> Cheers and thanks for the hint
>
> Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[matteo]

Hi Stefanos,

yep, but digging into this I was wondering how to use the EditInPlace
also for scripts :)

Cheers and thanks for the hint

Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[uclaros]

Hi Matteo,
not sure what exactly you want to achieve, but you can do a union and
dissolve by doing a buffer with zero buffer distance and enabling the
dissolve result checkbox.

Regards,
Stefanos




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Re: [QGIS-Developer] EditInPlace Processing script

[Germán Carrillo]

Hi Matteo,

confirmed! Then, we've found a bug:

https://github.com/qgis/QGIS/issues/35844

Regards,

Germán

El vie., 17 abr. 2020 a las 2:29, matteo ()
escribió:

> Hola Germàn,
>
> thanks for the hint. While it is perfectly working on QGIS 3.10
> installed from repository. QGIS is crashing with the same data and the
> same script in QGIS master (compiled yesterday). Are there any API
> problems?
>
> Cheers and thanks!
>
> Matteo
>

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Re: [QGIS-Developer] EditInPlace Processing script

[matteo]

Hola Germàn,

thanks for the hint. While it is perfectly working on QGIS 3.10
installed from repository. QGIS is crashing with the same data and the
same script in QGIS master (compiled yesterday). Are there any API problems?

Cheers and thanks!

Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[Germán Carrillo]

Hi Matteo,

yes, it's possible to write custom Processing scripts for editing layers
in-place.

Here you can find an example (buffer):
https://github.com/gacarrillor/QGIS-Resources/blob/master/collections/processing_scripts/processing/processing_script_edit_in_place.py

>From the example we can see:

   - We need to set the QgsProcessingAlgorithm.FlagSupportsInPlaceEdits
   flag for our algorithm.
   - It's not required that our algorithm inherits from
   QgsProcessingFeatureBasedAlgorithm for it to support edit-in-place[*].
   - The supportInPlaceEdit() method allows us to specify for which layers
   our algorithm can be offered as edit-in-place.

Regards,

Germán

[*] As a demo, the buffer example is OK. However, since each feature
generates a new feature without needing other source features, the buffer
example could also be written as a QgsProcessingFeatureBasedAlgorithm. :)

El mar., 14 abr. 2020 a las 3:22, matteo ()
escribió:

> Hi Arnaud,
>
> I explored the QgsProcessingFeatureBasedAlgorithm but unfortunately is
> not the case of what I'm looking for. From what I understood
> QgsProcessingFeatureBasedAlgorithm is the class to use when the
> algorithm performs "feature-by-feature" operations like buffers.
>
> In my case I would like to "change" the geometry of the input layer
> (union and dissolve).
>
> Cheers and thanks for the input anyway!
>
> Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[matteo]

Hi Arnaud,

I explored the QgsProcessingFeatureBasedAlgorithm but unfortunately is
not the case of what I'm looking for. From what I understood
QgsProcessingFeatureBasedAlgorithm is the class to use when the
algorithm performs "feature-by-feature" operations like buffers.

In my case I would like to "change" the geometry of the input layer
(union and dissolve).

Cheers and thanks for the input anyway!

Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[matteo]

Thanks Arnaud, will try and let you know!

Cheers

Matteo
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Re: [QGIS-Developer] EditInPlace Processing script

[Arnaud Morvan]

Note that when heriting form QgsProcessingFeatureBasedAlgorithm,

you do not have to implement processAlgorithm method which is already 
implemented in QgsProcessingFeatureBasedAlgorithm


but should implement the processFeature method.

Arnaud Morvan
Ingénieur logiciel
Tél: +33 (0)4 58 48 20 32

Camptocamp France SAS
18 rue du Lac Saint André
Savoie Technolac - Bâtiment Le Dauphin
F-73370 Le Bourget du Lac
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Le 09/04/2020 à 13:35, Arnaud Morvan a écrit :

Hello Matteo,

As far as I know, if your algorithm :

    does not change the table structure (geometry type, fields list 
and their types)


    is an instance of QgsProcessingFeatureBasedAlgorithm (output one 
feature for each input feature)


In brief:

    - If your algorithm output one feature for each input feature:

       => your should inherit from QgsProcessingFeatureBasedAlgorithm.

    - If your outputs features have same geometry type and same fields 
with same types:


       => you can put the flag on your algorithm as it can be used for 
in place editing.


When in place editing is checked in dialog, output features replace 
input features in source instead of being appended to an output.


Arnaud Morvan
Ingénieur logiciel
Tél: +33 (0)4 58 48 20 32

Camptocamp France SAS
18 rue du Lac Saint André
Savoie Technolac - Bâtiment Le Dauphin
F-73370 Le Bourget du Lac
http://www.camptocamp.com

Le 09/04/2020 à 10:53, matteo a écrit :

Hi all,

is it possible to write a custom Processing script that can edit the
input layer in place (with the core functionality of course)?

In the documentation I found the method to check if the algorithm
supports the in place editing [0] but not the method to set the script
to support the functionality.

There are a few python core algorithms with

Thanks for any hint!

Cheers

Matteo


[0]
https://qgis.org/pyqgis/3.10/core/QgsProcessingAlgorithm.html#qgis.core.QgsProcessingAlgorithm.supportInPlaceEdit 


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Re: [QGIS-Developer] EditInPlace Processing script

[Arnaud Morvan]

Hello Matteo,

As far as I know, if your algorithm :

    does not change the table structure (geometry type, fields list and 
their types)


    is an instance of QgsProcessingFeatureBasedAlgorithm (output one 
feature for each input feature)


In brief:

    - If your algorithm output one feature for each input feature:

       => your should inherit from QgsProcessingFeatureBasedAlgorithm.

    - If your outputs features have same geometry type and same fields 
with same types:


       => you can put the flag on your algorithm as it can be used for 
in place editing.


When in place editing is checked in dialog, output features replace 
input features in source instead of being appended to an output.


Arnaud Morvan
Ingénieur logiciel
Tél: +33 (0)4 58 48 20 32

Camptocamp France SAS
18 rue du Lac Saint André
Savoie Technolac - Bâtiment Le Dauphin
F-73370 Le Bourget du Lac
http://www.camptocamp.com

Le 09/04/2020 à 10:53, matteo a écrit :

Hi all,

is it possible to write a custom Processing script that can edit the
input layer in place (with the core functionality of course)?

In the documentation I found the method to check if the algorithm
supports the in place editing [0] but not the method to set the script
to support the functionality.

There are a few python core algorithms with

Thanks for any hint!

Cheers

Matteo


[0]
https://qgis.org/pyqgis/3.10/core/QgsProcessingAlgorithm.html#qgis.core.QgsProcessingAlgorithm.supportInPlaceEdit
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[QGIS-Developer] EditInPlace Processing script

[matteo]

Hi all,

is it possible to write a custom Processing script that can edit the
input layer in place (with the core functionality of course)?

In the documentation I found the method to check if the algorithm
supports the in place editing [0] but not the method to set the script
to support the functionality.

There are a few python core algorithms with

Thanks for any hint!

Cheers

Matteo


[0]
https://qgis.org/pyqgis/3.10/core/QgsProcessingAlgorithm.html#qgis.core.QgsProcessingAlgorithm.supportInPlaceEdit
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