[Qgis-user] Atlas feature id not synchronised

[Dario C]

very helpful, thanks

any idea why @atlas_featureid start correctly (following layer coverage
feature) and then continue using odd numbers?

First values for ID field:
4,12, 38, 42, 60, etc

First values for @atlas_featureid:
4,12,38, 58, 72, etc.

😐

Il giorno ven 12 nov 2021 alle ore 16:34 Alexandre Neto <
senhor.neto at gmail.com> ha scritto:

> $id is a function that returns the current layer row id. This id is
> somehow internal to QGIS and not actually a layer field.
>
>
> https://docs.qgis.org/3.16/en/docs/user_manual/working_with_vector/functions_list.html#expression-function-record-and-attributes-id
>
> The @atlas_featureid is the equivalent for the coverage layer.
>
> So, if we are talking about the same layer then the two functions
> represent the same feature.
>
> Hope it clarifies.
>
> Alexandre Neto
> User Support
> www.qcooperative.net
>
> On Fri, Nov 12, 2021 at 2:39 PM Dario C <dario955i at gmail.com> wrote:
>
>> thank you for your quick response.
>>
>> atlas coverage layer is the building layer
>>
>> Yes, with  $id = @atlas_featureid is working well!!! Thank you
>>
>> Can you please explain, if you don't mind, why? I mean, what's
>> @atlas_featureid and why $id = @atlas_featureid solve the problem?
>>
>>
>>
>> Il giorno ven 12 nov 2021 alle ore 15:04 Alexandre Neto <
>> senhor.neto at gmail.com> ha scritto:
>>
>>> Hi Dario,
>>>
>>> If the atlas coverage layer is the buildings layer, then you can use:
>>>
>>> $id = @atlasfeatureid
>>>
>>> If not, if you have a common attribute called ID between the building
>>> layer and your coverage layer, you can use:
>>>
>>> "ID" =  attributes( @atlas_feature)['ID']
>>>
>>>
>>> Hope it helps
>>>
>>> Alexandre Neto
>>> User Support
>>> www.qcooperative.net
>>>
>>> On Fri, Nov 12, 2021 at 1:50 PM Dario <dario955i at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I’m doing a report and it is happening something odd. I don’t know if
>>>> it a bug or something I’m not doing well (probably).
>>>>
>>>> - I have a layer with an ID as integer and unique
>>>> - I have categorised my layer by rule, in order to show only the
>>>> analysed building: “ID=@atlasfeatureid+1”
>>>> - I’m using this ID as controller of my group report
>>>> - I have added a textfield to show some field and “atlasfeatureid+1”
>>>> for a double check
>>>> - first three pages are ok, after map and text are synchro, but the
>>>> categorised building does not work and indeed atlasfeatureid shows number
>>>> completely different with ID
>>>>
>>>>
>>>> I have no idea why :(
>>>>
>>>>
>>>>
>>>>
>>>> _
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>>>
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