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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Hello geojson-gurus,<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">First of all, thank you for all your good work about geojson, we love to use it!;)<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I’ve got a question after trying to figure out which orientation to use for polygons.<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So I’ve read your latest specs:
<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><a href="https://datatracker.ietf.org/doc/draft-ietf-geojson/?include_text=1" target="_blank">https://datatracker.ietf.org/doc/draft-ietf-geojson/?include_text=1</a><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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Here it is said:<o:p></o:p></p>
<pre style="margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all"><span style="font-size:10.5pt;color:black">Polygon rings MUST follow the right-hand rule for orientation</span><o:p></o:p></pre>
<pre style="margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all"><span style="font-size:10.5pt;color:black"> (counter-clockwise external rings, clockwise internal rings).</span><o:p></o:p></pre>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">(clear answer to my question, right?)<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">But a bit upper in the same doc Polygon section:<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 class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black">A.3. Polygons</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> Coordinates of a Polygon are an array of LinearRing (see</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> Section 3.1.6) coordinate arrays. The first element in the array</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> represents the exterior ring. Any subsequent elements represent</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> interior rings (or holes).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> No holes:</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> {</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> "type": "Polygon",</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> "coordinates": [</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [100.0, 0.0],</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [100.0, 1.0],</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [101.0, 1.0],</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [101.0, 0.0],</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> [100.0, 0.0]</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> ]</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> ]</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:7.9pt;background:#FFFDF5;word-break:break-all">
<span style="font-size:10.5pt;font-family:"Courier New";color:black"> }</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">That would mean clockwise orientation…?<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">So, which one u are planning to use in future? So we will stick to it too!<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks a lot!<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 class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Best regards,<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Anna Eivazi<o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"><o:p> </o:p></span></p>
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