[Qgis-user] Atlas by year

[Marco Antônio Ferreira Pedrosa]

It's just a regular Join between feature and table?

--

Marcão

Em ter, 26 de mar de 2019 às 09:56, Marco Antônio Ferreira Pedrosa <
marcomottim at gmail.com> escreveu:

> Hi Andreas,
>
> How can I create and use a cross-join in this case? (I think it would be
> useful for the other tasks that I have to work on)
>
> Tnks in advance.
>
> --
>
> Marcão
>
> Em ter, 26 de mar de 2019 às 09:46, Andreas Neumann <a.neumann at carto.net>
> escreveu:
>
>> Hi,
>>
>> Atlas with combinations of two or more attributes, and/or sometimes also
>> feature geometries - this is a typical case for a cross-join in a database.
>> You would create a new view as a cross-join with all combinations.
>>
>> But glad that you already found a solution.
>>
>> Greetings,
>> Andreas
>>
>> On 2019-03-26 13:43, Marco Antônio Ferreira Pedrosa wrote:
>>
>> Hi Alexandre,
>>
>> It worked perfectly! As you said:
>>
>> 1) I made a unique list from the years and generate a new feature. Then
>> used it as the coverage layer for atlas.
>> 2) For each symboloy (rule-based):
>>  (@atlas_pagename  =  "Year") AND ("Quality" = 'Excelent')
>>  (@atlas_pagename  =   "Year"  ) AND ("Quality" = 'Good')
>> so on...
>>
>> As you see I changed it a little bit, so I can use the "current" year
>> from Atlas.
>>
>> Tnks a lot!
>>
>> P.S: PORTUGAL CARALHO!!!! (sou Brasileiro haha)
>>
>> --
>>
>> Marcão
>>
>> Em seg, 25 de mar de 2019 às 20:58, Alexandre Neto <senhor.neto at gmail.com>
>> escreveu:
>>
>>> You need to create a layer, with a column called year, with each year in
>>> a row. The layer does not need to have a geometry. Use that layer as the
>>> coverage layer for atlas.
>>>
>>> For the layer you want to filter by year, create a rule-based symbology,
>>> and use the following rule/expression:
>>>
>>> attribute(@atlasfeature, 'yea
>>> r') = "year"
>>>
>>> This compares the current atlas feature field year, to the layer year
>>> column, and renders the features only if the years match.
>>>
>>> Hope it helps.
>>>
>>> Alexandre Neto
>>>
>>> A seg, 25/03/2019, 13:50, Marco Antônio Ferreira Pedrosa <
>>> marcomottim at gmail.com> escreveu:
>>>
>>>> Hi all,
>>>>
>>>> Sorry if s a silly question!
>>>>
>>>> How to generate an atlas by a value in the attibute table? (i.e: Year).
>>>> QGIS Atlas would generate one map for each attribute value but not group by
>>>> year.
>>>>
>>>> For each year, I want to show the features with a categorized symbology
>>>> (same for all years, but I want to show just the features from that year).
>>>>
>>>> tnks in advance!
>>>> _______________________________________________
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>>>
>>> --
>>> Alexandre Neto
>>> ---------------------
>>> @AlexNetoGeo
>>> http://sigsemgrilhetas.wordpress.com
>>> http://gisunchained.wordpress.com
>>>
>>
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