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</o:shapelayout></xml><![endif]--></head><body lang=EN-ZA link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>HI, Can you please remove me from this user list.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:16.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Faadil Khan<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Tel: 011 675 5111<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Fax: 011 675 7018<o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><a href="http://www.shama.co.za"><span style='color:blue'>www.shama.co.za</span></a><o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><img border=0 width=427 height=124 id="Picture_x0020_1" src="cid:image001.png@01CE36A4.10667690"><o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span lang=EN-US style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> qgis-user-bounces@lists.osgeo.org [mailto:qgis-user-bounces@lists.osgeo.org] <b>On Behalf Of </b>G. Allegri<br><b>Sent:</b> 11 April 2013 09:53 AM<br><b>To:</b> Levy Vincent<br><b>Cc:</b> qgis-user@lists.osgeo.org<br><b>Subject:</b> Re: [Qgis-user] Ho to intersect layers with some conditions<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I fear it isn't possible to do it in one single step. If I had to do it in a rush I would:<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> - add a column to the grid layer and populate it with the square area. Your squares are fixed, so you can populate it manually, otherwise the field calculator could be used to do it<o:p></o:p></p></div><div><p class=MsoNormal> - do an intersect between you polygon and the grid (Vector -> Geoprocessing)<o:p></o:p></p></div><div><p class=MsoNormal> - add another column to the intersection result, and populate it again with the area, using the Filed Calculator.<o:p></o:p></p></div><div><p class=MsoNormal> - AT this point you will have the original area and the new area. With Field Calculator populate a third column with the new area / original area ratio (x 100 if you want the precentage).<o:p></o:p></p></div><div><p class=MsoNormal> - Select the squares where the percentega is over 90.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>How to obtain the unclipped, original, squares? You can do a spatial join between the original grid, and the selected squares (above 90) from the intersection result.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-bottom:12.0pt'>Giovanni<o:p></o:p></p><div><p class=MsoNormal>2013/4/11 Levy Vincent <<a href="mailto:v.levy@cbnbl.org" target="_blank">v.levy@cbnbl.org</a>><o:p></o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR>Hello,<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I have a layer with a big polygon and another layer which is a grid (made of squares 10X10m). The grid is larger than the big polygon and cover it entirely. </span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I want to keep only the squares of the grid contained in the polygon. I know how to intersect my two layers to select all the squares of the grid inside my “big polygon”.</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>The problem is on the border : I would like to select only the squares which 90% of their surface is contained in the big polygon.</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>Is there any plug-in or another solution to do it easily?</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US>I hope somebody could help me, thank you for your answer,</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=EN-US> </span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span lang=FR style='font-size:10.0pt;color:navy'>Vincent LEVY</span></b><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>Chargé de mission scientifique</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>Conservatoire botanique national de Bailleul</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>Antenne Picardie</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>13 allée de la Pépinière</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>Centre Oasis</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>80044 AMIENS CEDEX 1</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'>Tél./Fax: 03 22 89 69 78</span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt'><a href="mailto:v.levy@cbnbl.org" target="_blank">v.levy@cbnbl.org</a></span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR><a href="http://www.cbnbl.org" target="_blank"><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:navy'>http://</span></a><a href="http://www.cbnbl" target="_blank"><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:navy'>www.cbnbl</span></a></span><u><span lang=FR style='font-size:10.0pt;color:navy'>.org</span></u><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='color:navy'> </span><i><span lang=FR style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:navy'>Pour recevoir notre lettre d'infos électronique, inscrivez-vous </span></i><span lang=FR style='font-size:10.0pt;color:navy'>: </span><span lang=FR><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span lang=FR style='font-size:10.0pt;color:navy'><a href="http://www.cbnbl.org/spip.php?page=abonnement" target="_blank" title="http://www.cbnbl.org/spip.php?page=abonnement"><span style='font-family:"Tahoma","sans-serif"'>http://www.cbnbl.org/spip.php?page=abonnement</span></a></span><span lang=FR><o:p></o:p></span></p></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>Qgis-user mailing list<br><a href="mailto:Qgis-user@lists.osgeo.org">Qgis-user@lists.osgeo.org</a><br><a href="http://lists.osgeo.org/mailman/listinfo/qgis-user" target="_blank">http://lists.osgeo.org/mailman/listinfo/qgis-user</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <br>Giovanni Allegri<br><a href="http://about.me/giovanniallegri" target="_blank">http://about.me/giovanniallegri</a><br>blog: <a href="http://blog.spaziogis.it" target="_blank">http://blog.spaziogis.it</a><br>GEO+ geomatica in Italia <a href="http://bit.ly/GEOplus" target="_blank">http://bit.ly/GEOplus</a> <o:p></o:p></p></div></div></body></html>