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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you have points/locations you can create bufferzones
<a href="http://docs.qgis.org/2.2/en/docs/gentle_gis_introduction/vector_spatial_analysis_buffers.html">
http://docs.qgis.org/2.2/en/docs/gentle_gis_introduction/vector_spatial_analysis_buffers.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">If you want to calculate use the fiels calculator. In this example change the function from Length to Area
<a href="http://docs.qgis.org/2.2/en/docs/user_manual/working_with_vector/field_calculator.html">
http://docs.qgis.org/2.2/en/docs/user_manual/working_with_vector/field_calculator.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray">Lene Fischer</span></b><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray">Associate Professor</span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray">Department of Geosciences and Natural Resource Management</span></b><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray">University of Copenhagen</span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray">MOB +45 40115084</span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray"><a href="mailto:lfi@ign.ku.dk" title="LFI@IGN.KU.DK"><span style="color:gray;text-decoration:none">lfi@ign.ku.dk</span></a></span><span lang="EN-US" style="color:#1F497D"><o:p></o:p></span></p>
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<p class="MsoNormal" style="line-height:12.0pt"><span style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray"><img border="0" width="239" height="153" id="Billede_x0020_1" src="cid:image003.jpg@01D027EF.998FCEB0" alt="SCIENCE_bomaerke_UK"></span><span lang="EN-GB" style="font-size:7.5pt;font-family:"Verdana","sans-serif";color:gray;mso-fareast-language:EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"> </span><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:10.0pt;font-family:"Tahoma","sans-serif"">Fra:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> qgis-user-bounces@lists.osgeo.org [mailto:qgis-user-bounces@lists.osgeo.org]
<b>På vegne af </b>Nicolas Cadieux<br>
<b>Sendt:</b> 4. januar 2015 03:33<br>
<b>Til:</b> qgis-user@lists.osgeo.org<br>
<b>Emne:</b> Re: [Qgis-user] Help! Cirle radius<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Hi,<br>
There are a number of plugin that can make circles. ArcheoCad, is one of them. If is does not work the way you want, look for an other under CAD like plugins. You can also create a 50k buffer around points.
<o:p></o:p></p>
<p>Once you have the circle, save the layer and right click on the circle, and you will get the area. If you want, you can create a field called 'area' in the layer with circles and you can generate the area using the Qgis field calculator using and expression.
<o:p></o:p></p>
<p>Nicolas Cadieux M.Sc.<br>
Les Entreprises Archéotec inc. <br>
8548, rue Saint-Denis Montréal H2P 2H2<br>
Téléphone: 514.381.5112 Fax: 514.381.4995<o:p></o:p></p>
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<p class="MsoNormal">Le 2015-01-03 17:50, "Paula Urbina [via OSGeo.org]" <<a href="/user/SendEmail.jtp?type=node&node=5179913&i=0" target="_top">[hidden email]</a>> a écrit :<o:p></o:p></p>
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<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Could you please tell me, How I can assign a circle radius (X=50 km) to a location? And then How I can calculated the area covered by some circles?<o:p></o:p></p>
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<p class="MsoNormal">Please, help me!!!!<o:p></o:p></p>
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