<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=iso-8859-1"><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p.MsoAcetate, li.MsoAcetate, div.MsoAcetate
{mso-style-priority:99;
mso-style-link:"Texte de bulles Car";
margin:0cm;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:"Tahoma","sans-serif";
mso-fareast-language:EN-US;}
p.MsoListParagraph, li.MsoListParagraph, div.MsoListParagraph
{mso-style-priority:34;
margin-top:0cm;
margin-right:0cm;
margin-bottom:0cm;
margin-left:36.0pt;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
span.EmailStyle17
{mso-style-type:personal-compose;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.TextedebullesCar
{mso-style-name:"Texte de bulles Car";
mso-style-priority:99;
mso-style-link:"Texte de bulles";
font-family:"Tahoma","sans-serif";}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:1189638388;
mso-list-type:hybrid;
mso-list-template-ids:-1417913170 67895297 67895299 67895301 67895297 67895299 67895301 67895297 67895299 67895301;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l1
{mso-list-id:2129859647;
mso-list-type:hybrid;
mso-list-template-ids:-1222054470 67895297 67895299 67895301 67895297 67895299 67895301 67895297 67895299 67895301;}
@list l1:level1
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l1:level2
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l1:level3
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l1:level4
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l1:level5
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l1:level6
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
@list l1:level7
{mso-level-number-format:bullet;
mso-level-text:\F0B7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Symbol;}
@list l1:level8
{mso-level-number-format:bullet;
mso-level-text:o;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:"Courier New";}
@list l1:level9
{mso-level-number-format:bullet;
mso-level-text:\F0A7;
mso-level-tab-stop:none;
mso-level-number-position:left;
text-indent:-18.0pt;
font-family:Wingdings;}
ol
{margin-bottom:0cm;}
ul
{margin-bottom:0cm;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m running qgis 3.16 on w10.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I have two vector layers with multiple entities :<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>One with each town borders (? I’m note sure if this is the right word) I mean the area for each zip code. (TOWN_LAYER) (polygon vector)<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l1 level1 lfo1'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>The second with cropfields and meadows (polygon vector) (FIELD_LAYER)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I want the total area of cropfield and Meadows in each Town from the first layer. (Exemple : one town have 31 fields/meadows -> total town area is 55km² (i have that info) and cropfield/meadows area is 26km² (i need that one for each town)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>First i tried something like :<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>Sum(area(intersection($geometry,geometry(‘FIELD_LAYER_ID’))),group_by :=FIELD WITH SAME VALUE EVERYWHERE)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But it is not a valid expression (geometry(‘FIELD_LAYER_ID’) don’t work)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Some meadows span over several town. Some juste inside one. <o:p></o:p></p><p class=MsoNormal>I’ve « cut » the FIELD_LAYER with the TOWN_LAYER<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>My first vector layer as a field specific and i’m looking for the formula that would give me the right answer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve tried :<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>aggregate (layer :=’FIELD_LAYER_ID’, aggregate :=’sum’,expression :=$area, filter := intersects($geometry, geometry(@parent)))<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>It doesn’t work because the borders are overlapping : each fields just touching the borders even if they belong to another town are included.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>« Contains » instead of « intersects » doesn’t work either because some borders of the field are overlapping and those are not included.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Exemple with « count » instead of « sum »<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>A town have 31 fields spanning over 26km² : Intersects give me a total count of 38 and 48km² and contains give me 12 and 4,7 km² because of borders overlap.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I think the solution is with intersection, but i can’t reach a valid expression.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Another solution may be splitting the FIELD_LAYER in as much layer as town (I did that) and batch process for each layer :<o:p></o:p></p><p class=MsoListParagraph style='text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-family:Symbol'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]>sum($area,group_by := FIELD WITH SAME VALUE EVERYWHERE)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>then get the result in the TOWN_LAYER. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>But i don’t know how to batch process it and get the result in the first layer.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>And for informations I’m talking hundreds of towns and thousands of fields/meadows entities so one by one calculation is not possible.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I hope I make sense and that someone know how to deal with that.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>Edouard BOURGINE<o:p></o:p></span></b></p><p class=MsoNormal><i><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>Ingénieur Environnement<o:p></o:p></span></i></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>Tél/Fax : 03.83.22.69.09<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>Port : 06.63.12.99.63<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>ACOSOL<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>26 rue de l’Ornain<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Arial","sans-serif";mso-fareast-language:FR'>54520 LAXOU<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div><div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br /> <table style="border-top: 1px solid #D3D4DE;">
<tr>
<td style="width: 55px; padding-top: 18px;"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;" /></a></td>
<td style="width: 470px; padding-top: 17px; color: #41424e; font-size: 13px; font-family: Arial, Helvetica, sans-serif; line-height: 18px;">Garanti sans virus. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient" target="_blank" style="color: #4453ea;">www.avast.com</a> </td>
</tr>
</table>
<a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"> </a></div></body></html>