[Qgis-user] Atlas feature id not synchronised

[Alexandre Neto]

Hi,

That probably depends on what you have in the atlas sorting options, you
can choose any field or expression to sort atlas output, if you really
want, you can use $id as an expression in the sort option or your ID field

Alexandre Neto
User support
www.qcooperative.net

A sexta, 12/11/2021, 16:42, Dario C <dario955i at gmail.com> escreveu:

> 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 :(
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _
>>>>> _______________________________________________
>>>>> Qgis-user mailing list
>>>>> Qgis-user at lists.osgeo.org
>>>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>>
>>>>
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