[Qgis-user] Sum of field value within same cluster

[Dario C]

Hi Alexandre,
thank you for your reply, but I'm not sure I got it. I don't want to see
the @cluster_size (number of symbols within the cluster), but the sum of a
specific field.
I don't know what "@cluster_value" is. I see only @cluster_size
and @cluster_colour as options.

Thanks

Il giorno mar 22 giu 2021 alle ore 12:12 Alexandre Neto <
senhor.neto at gmail.com> ha scritto:

> Hi Dario,
>
> You don't need such complicated expression. There's a cluster variable
> that returns the value for you. It's @cluster_value.
>
> This is well documented here:
>
>
> https://docs.qgis.org/3.16/en/docs/user_manual/working_with_vector/vector_properties.html#point-cluster-renderer
>
> Hope it helped.
>
> Alexandre Neto
> QGIS Support
> www.qcooperative.net
>
>
>
> A terça, 22/06/2021, 09:55, Dario C <dario955i at gmail.com> escreveu:
>
>> Hi,
>> I think I'm on the right way using this expression:
>>
>> aggregate('LayerID','sum',"FIELD",filter:=intersects(buffer($geometry,60),geometry(@parent)))
>>
>> [image: image.png]
>> In point cluster I set 5 mm as distance (size of symbol is 4mm), so I
>> thought that the buffer of my expression needed to be 5. Actually 5 does
>> not work, so I changed to 5 multiply by the scale of the drawing
>> (1/12.000), so I set 60.
>> The point is that it works not so precise. In the screenshot you can see
>> that, when you have two cluster close each other, the total sum is correct,
>> but some parts are shifted to another cluster.
>>
>> Thanks for your help
>>
>>
>>
>> Il giorno dom 20 giu 2021 alle ore 15:15 Dario <dario955i at gmail.com> ha
>> scritto:
>>
>>> Hi,
>>> I’m working on a big scale, so I need to see my points using point
>>> cluster.
>>> I’d like to see as label the sum of a specific field of the point of the
>>> same cluster.
>>>
>>> I started using aggregate expression and buffer intersection as filter,
>>> but nothing good...
>>>
>>> Thank you in advance.
>>>
>>> Cheers mm
>>>
>>> _
>>
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