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<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Dear All<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Happy New Year!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">I’m trying to use the GetAreaOfUse() method on a osgeo.osr.SpatialReference to check the validity of coordinates.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">With the following for the Irish National Grid (EPSG:29902) I get the WGS84 bounds – west, east, south, north - of the spatial reference system to be -10.56, -5.93, 51.39, 55.43:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">>>> from osgeo import osr<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">>>> srs = osr.SpatialReference()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">>>> srs.ImportFromEPSG(29902)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">0<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">>>> aou = srs.GetAreaOfUse()<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">>>> aou.west_lon_degree, aou.east_lon_degree, aou.south_lat_degree, aou.north_lat_degree<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">(-10.56, -5.93, 51.39, 55.43)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">However, at
<a href="https://epsg.io/29902%20the%20WGS84">https://epsg.io/29902 the WGS84</a> bounds are listed as -10.56, -5.34, 51.39, 55.43.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">How is the GetAreaOfUse() method implemented? And is there a bug in the values stored for the EPSG:29902 projection? Or is there another reason why the values differ to those listed
at epsg.io.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif;color:black">Many thanks, best wishes, Simon.<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#F6A124;mso-fareast-language:EN-GB"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#F6A124;mso-fareast-language:EN-GB"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#F6A124;mso-fareast-language:EN-GB"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#F6A124;mso-fareast-language:EN-GB"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#F6A124;mso-fareast-language:EN-GB">Simon Wright<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-family:"Arial",sans-serif;color:#4A4A49;mso-fareast-language:EN-GB">JBA Risk Management Limited<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:black;mso-fareast-language:EN-GB">-- <o:p>
</o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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