[QGIS-Developer] [processing] Allow to use expressions on géométries in RefactorFields

[Nyall Dawson]

On 26 October 2017 at 19:51, Matthias Kuhn <matthias at opengis.ch> wrote:
> Hi,
>
> I wouldn't have any problem with having one algorithm for all of this.
> Personally I tend to think of geometry as just another attribute (in
> good old database manner).
>
> The only thing I would be worried about is the naming which will make it
> hard to discover for people looking to only modify the geometry. A
> possibility would be to rename it to "refactor feature", "refactor
> fields and geometry" or expose multiple algorithms (based on the same
> code internally), "refactor fields", "refactor feature", "refactor
> geometry".

Note that there's already a separate "geometry by expression"
algorithm in master, so I'm not sure it makes sense to add this to the
"refactor fields" algorithm.

However - I do think there'd be LOTS of use in adding this to the new
"aggregate" algorithm.

Nyall

>
> Cheers
> Matthias
>
> On 10/26/2017 11:44 AM, Arnaud Morvan wrote:
>> Hello,
>>
>> A customer ask us to allow, in refactor fields, the use of an expression
>> to calculate the output geometry.
>>
>> I know that the orientation in QGIS 3.0 is to have simple algorithms
>> instead of having complex ones,
>> it that direction, it should make sense to create another algorithm to
>> do that.
>>
>> But another side, having this functionnality in refactorfields allow
>> doing complex things without need to create a model.
>>
>> Does anyone has an opinion on this ?
>>
>> Regards
>>
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