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<p>Hi,</p>
<p>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.</p>
<p>But glad that you already found a solution.</p>
<p>Greetings,<br />Andreas</p>
<p id="reply-intro">On 2019-03-26 13:43, Marco Antônio Ferreira Pedrosa wrote:</p>
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<div dir="ltr">Hi Alexandre,
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<div>It worked perfectly! As you said:</div>
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<div>1) I made a unique list from the years and generate a new feature. Then used it as the coverage layer for atlas. </div>
<div>2) For each symboloy (rule-based):</div>
<div> (@atlas_pagename = "Year") AND ("Quality" = 'Excelent')</div>
<div> (@atlas_pagename = "Year" ) AND ("Quality" = 'Good') </div>
<div>so on...</div>
<div> </div>
<div>As you see I changed it a little bit, so I can use the "current" year from Atlas.</div>
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<div>Tnks a lot!</div>
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<p>P.S: PORTUGAL CARALHO!!!! (sou Brasileiro haha)</p>
<p>--</p>
<p>Marcão</p>
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<div class="gmail_attr" dir="ltr">Em seg, 25 de mar de 2019 às 20:58, Alexandre Neto <<a href="mailto:senhor.neto@gmail.com" rel="noreferrer">senhor.neto@gmail.com</a>> escreveu:</div>
<blockquote class="gmail_quote" style="margin: 0px 0px 0px 0.8ex; border-left: 1px solid #cccccc; padding-left: 1ex;">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.
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<div>For the layer you want to filter by year, create a rule-based symbology, and use the following rule/expression:</div>
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<div>attribute(@atlasfeature, 'yea</div>
<div>r') = "year" <br />
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<div dir="auto">This compares the current atlas feature field year, to the layer year column, and renders the features only if the years match. </div>
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<div dir="auto">Hope it helps. </div>
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<div dir="auto">Alexandre Neto <br /><br />
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<div dir="ltr">A seg, 25/03/2019, 13:50, Marco Antônio Ferreira Pedrosa <<a href="mailto:marcomottim@gmail.com" rel="noreferrer">marcomottim@gmail.com</a>> escreveu:</div>
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<div dir="ltr">Hi all,
<div> </div>
<div>Sorry if s a silly question!</div>
<div> </div>
<div>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.</div>
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<div>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).</div>
<div> </div>
<div>tnks in advance!</div>
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<div>Alexandre Neto</div>
<div>---------------------</div>
<div>@AlexNetoGeo</div>
<div><a href="http://sigsemgrilhetas.wordpress.com" target="_blank" rel="noopener noreferrer">http://sigsemgrilhetas.wordpress.com</a></div>
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