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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Thank you Nicolas!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Från:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> postgis-users <postgis-users-bounces@lists.osgeo.org>
<b>För </b>Nicolas Ribot<br>
<b>Skickat:</b> den 1 december 2021 15:10<br>
<b>Till:</b> PostGIS Users Discussion <postgis-users@lists.osgeo.org><br>
<b>Ämne:</b> Re: [postgis-users] polygons inside polygon<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p><strong><span style="background:yellow">Klicka bara på länkar och öppna bilagor om du litar på avsändaren och vet att innehållet är säkert.</span></strong><o:p></o:p></p>
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<p class="MsoNormal">Hi Paul,<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I often use a CTE to update values for a table:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<pre style="background:#2B2B2B"><span style="font-family:Consolas;color:#CC7832">with </span><span style="font-family:Consolas;color:#A9B7C6">tmp </span><span style="font-family:Consolas;color:#CC7832">as </span><span style="font-family:Consolas;color:#A9B7C6">(<br> </span><span style="font-family:Consolas;color:#CC7832">select distinct </span><span style="font-family:Consolas;color:#A9B7C6">p1.</span><span style="font-family:Consolas;color:#FFC66D">id</span><span style="font-family:Consolas;color:#CC7832">, </span><span style="font-family:Consolas;color:#A9B7C6">p2.</span><span style="font-family:Consolas;color:#FFC66D">id </span><span style="font-family:Consolas;color:#CC7832">is null as </span><span style="font-family:Consolas;color:#A9B7C6">outer_pg<br> </span><span style="font-family:Consolas;color:#CC7832">from </span><span style="font-family:Consolas;color:#A9B7C6">org p1<br> </span><span style="font-family:Consolas;color:#CC7832">left join </span><span style="font-family:Consolas;color:#A9B7C6">org p2 </span><span style="font-family:Consolas;color:#CC7832">on </span><span style="font-family:Consolas;color:#A9B7C6">p1.</span><span style="font-family:Consolas;color:#FFC66D">id </span><span style="font-family:Consolas;color:#A9B7C6"><> p2.</span><span style="font-family:Consolas;color:#FFC66D">id </span><span style="font-family:Consolas;color:#CC7832">and </span><i><span style="font-family:Consolas;color:#FFC66D">st_within</span></i><span style="font-family:Consolas;color:#A9B7C6">(p1.</span><span style="font-family:Consolas;color:#FFC66D">geom</span><span style="font-family:Consolas;color:#CC7832">, </span><span style="font-family:Consolas;color:#A9B7C6">p2.</span><span style="font-family:Consolas;color:#FFC66D">geom</span><span style="font-family:Consolas;color:#A9B7C6">)<br>) </span><span style="font-family:Consolas;color:#CC7832">update </span><span style="font-family:Consolas;color:#A9B7C6">org o </span><span style="font-family:Consolas;color:#CC7832">set </span><span style="font-family:Consolas;color:#FFC66D">outer_pg </span><span style="font-family:Consolas;color:#A9B7C6">= t.outer_pg<br></span><span style="font-family:Consolas;color:#CC7832">from </span><span style="font-family:Consolas;color:#A9B7C6">tmp t <br></span><span style="font-family:Consolas;color:#CC7832">where </span><span style="font-family:Consolas;color:#A9B7C6">o.</span><span style="font-family:Consolas;color:#FFC66D">id </span><span style="font-family:Consolas;color:#A9B7C6">= <a href="https://url11b.mailanyone.net/v1/?m=1msQJg-00087u-4f&i=57e1b682&c=0vE-U6c7dVKKWzkxjBIu13bHEpmR0MofmuukNTUFPwNMaCBDTRP5x06Wx5RAvWnZpHvXjToQ4OnR03iFbXuDoefHsyrPHa97giBXedq1uCHENfMjXEDKraLncqS-9We5fm7yROExsbMfL3_tbiHo1inXZ4hC0E9fhLVi1GgLOEKOpmewpogKm-gXPWwuZKOeYEGHTL1PtICR3x1rrQ2Kcd_JPVbfz0VD07WdxYCMnmUBZt3RHpZpArW6Bq8hK6NE">t.id</a></span><span style="font-family:Consolas;color:#CC7832">;</span><span style="font-family:Consolas;color:#A9B7C6"><o:p></o:p></span></pre>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Nicolas<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Wed, 1 Dec 2021 at 11:10, <<a href="mailto:paul.malm@lfv.se">paul.malm@lfv.se</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks Nicolas,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I’ve added a boolean column (outer_pg) in my original layer (org).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Then I tried to populate that column, but it I don’t have the skills…
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">I tried to use your selection:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">SELECT DISTINCT p1.fid, p2.fid IS null AS "outer_pg"</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">FROM org p1</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> LEFT JOIN org p2 ON p1.fid <> p2.fid AND st_within(p1.the_geom, p2.the_geom)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">order by p1.fid;</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">My try to populate outer_pg:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">UPDATE org
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">SET "outer_pg" = (SELECT outer_p FROM (</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">SELECT DISTINCT p1.fid, p2.fid IS null AS outer_p</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">from org p1</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> LEFT JOIN org p2 ON p1.fid <> p2.fid AND st_within(p1.the_geom, p2.the_geom) WHERE
p1.fid = org.fid) AS tmp)</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">But that is not correct, do you have any suggestions?</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Kind regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Paul</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">
</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Från:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> postgis-users <<a href="mailto:postgis-users-bounces@lists.osgeo.org" target="_blank">postgis-users-bounces@lists.osgeo.org</a>>
<b>För </b>Nicolas Ribot<br>
<b>Skickat:</b> den 30 november 2021 19:17<br>
<b>Till:</b> PostGIS Users Discussion <<a href="mailto:postgis-users@lists.osgeo.org" target="_blank">postgis-users@lists.osgeo.org</a>><br>
<b>Ämne:</b> Re: [postgis-users] polygons inside polygon</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
<p><strong><span style="background:yellow">Klicka bara på länkar och öppna bilagor om du litar på avsändaren och vet att innehållet är säkert.</span></strong><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hi,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">What about a simple left join on the table searching for polygons contained inside other polygon ?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Polygons that are contained inside other polygons will have false for the outer_pg column and true if they are not contained (ie are outer polygons).<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">You can then create the tables you want based on the outer_pg values<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<pre style="margin-bottom:12.0pt;background:#2B2B2B;background-attachment:scroll;background-position-x:0%;background-position-y:0%"><span style="font-family:Consolas;color:#CC7832">select distinct p1.</span><span style="font-family:Consolas;color:#9876AA">id</span><span style="font-family:Consolas;color:#CC7832">, p2.</span><span style="font-family:Consolas;color:#9876AA">id </span><span style="font-family:Consolas;color:#CC7832">is null as outer_pg<br>from polygon p1<br> left join polygon p2 on p1.</span><span style="font-family:Consolas;color:#9876AA">id </span><span style="font-family:Consolas;color:#CC7832"><> p2.</span><span style="font-family:Consolas;color:#9876AA">id </span><span style="font-family:Consolas;color:#CC7832">and </span><i><span style="font-family:Consolas;color:#FFC66D">st_within</span></i><span style="font-family:Consolas;color:#CC7832">(p1.</span><span style="font-family:Consolas;color:#9876AA">geom</span><span style="font-family:Consolas;color:#CC7832">, p2.</span><span style="font-family:Consolas;color:#9876AA">geom</span><span style="font-family:Consolas;color:#CC7832">)<br>order by p1.</span><span style="font-family:Consolas;color:#9876AA">id</span><span style="font-family:Consolas;color:#CC7832">;<br><br>id outer_pg<br>1 true<br>2 true<br>3 true<br>4 true<br>5 false<br>6 false<br>7 false<br>8 true<br>9 true<br>10 true<br>11 false</span><o:p></o:p></pre>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Nicolas<o:p></o:p></p>
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