<div dir="ltr">Hi Mathias, this question seems more appropriate for the QGIS User group, so I'm migrating the conversation there.<div><br></div><div>The description you've given lacks enough detail for me to have a clear understanding of your intentions, so perhaps in the future you could provide a link to some sample data and more detail on your objectives so that others might be able to assist. </div><div><br></div><div>From what I can gather from the discussion on stack overflow, you intend to remove the attributes of all features on one layer that intersect another layer spatially. To do this you may start an edit session and use a spatial select (Vector>>Research Tools>>Select by location) and then use the field calculator on the features attribute table to modify the attribute values of the selected features.</div><div><br></div><div>Regards</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 22 Sep 2020 at 14:59, Mathias MIRRA <<a href="mailto:mmirra@mcgr.fr">mmirra@mcgr.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">





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<p class="MsoNormal"><span style="font-size:11.5pt;font-family:Arial,sans-serif;color:rgb(36,39,41);background:rgb(249,248,246)">Here is my problem: I have 3 layers only I would like to remove all the attributes that are not on layer 1, no table of layers will provide a
 foreign key or link. So delete the layer 2 and 3 attributes that are not on layer 1.<u></u><u></u></span></p>
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<p class="MsoNormal">Screen : <a href="https://i.stack.imgur.com/nnOxd.png" target="_blank">https://i.stack.imgur.com/nnOxd.png</a><u></u><u></u></p>
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<p class="MsoNormal"><a href="https://gis.stackexchange.com/questions/374754/delete-unnecessary-pyqgis-attributes?noredirect=1#comment612308_374754" target="_blank">https://gis.stackexchange.com/questions/374754/delete-unnecessary-pyqgis-attributes?noredirect=1#comment612308_374754</a><u></u><u></u></p>
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<p class="MsoNormal"><b><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(78,135,160)">Mathias Mirra<u></u><u></u></span></b></p>
<p class="MsoNormal"><span style="font-size:10pt;font-family:Arial,sans-serif;color:rgb(78,135,160)">Développeur</span><span style="font-size:12pt;font-family:Arial,sans-serif;color:rgb(78,135,160)"><u></u><u></u></span></p>
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<p class="MsoNormal"><span style="font-size:10pt;font-family:Arial,sans-serif">Tel. : 06 29 70 41 92 | Mail. :
<a href="mailto:mmirra@mcgr.fr" target="_blank"><span style="color:rgb(5,99,193)">mmirra@mcgr.fr</span></a><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9pt;font-family:Arial,sans-serif">281 Route d'Espagne,
<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:9pt;font-family:Arial,sans-serif">31100 Toulouse<u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:9pt;font-family:Arial,sans-serif">05 32 09 38 71 |
</span><span lang="EN-US" style="font-size:12pt"><a href="http://www.mcgr.fr/" target="_blank"><span style="font-size:9pt;font-family:Arial,sans-serif;color:windowtext">www.mcgr.fr</span></a></span><span lang="EN-US" style="font-size:9pt;font-family:Arial,sans-serif"><u></u><u></u></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10pt;font-family:Arial,sans-serif"> 
</span><a href="https://www.facebook.com/groupemcgr/" target="_blank"><span lang="EN-US" style="font-size:12pt;color:windowtext;text-decoration:none"><img border="0" width="25" height="25" style="width: 0.2604in; height: 0.2604in;" id="gmail-m_-4722470526354301142Image_x0020_2" src="cid:174b66aa97b5b16b22"></span></a><span lang="EN-US" style="font-size:10pt;font-family:Arial,sans-serif">     </span><a href="https://fr.linkedin.com/company/groupemcgr" target="_blank"><span lang="EN-US" style="font-size:12pt;color:windowtext;text-decoration:none"><img border="0" width="25" height="25" style="width: 0.2604in; height: 0.2604in;" id="gmail-m_-4722470526354301142Image_x0020_3" src="cid:174b66aa97b692e333"></span></a><span lang="EN-US" style="font-size:10pt;font-family:Arial,sans-serif">     </span><a href="https://www.youtube.com/channel/UCahBf8ogJuyGlzAczTTtC9w" target="_blank"><span lang="EN-US" style="font-size:12pt;color:windowtext;text-decoration:none"><img border="0" width="25" height="25" style="width: 0.2604in; height: 0.2604in;" id="gmail-m_-4722470526354301142Image_x0020_4" src="cid:174b66aa97b7745b44"></span></a><span lang="EN-US" style="font-size:10pt;font-family:Arial,sans-serif"><u></u><u></u></span></p>
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Description générée automatiquement"></span><span lang="EN-US" style="font-size:9pt;font-family:Arial,sans-serif"><u></u><u></u></span></p>
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