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</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>What is the `polyGeometry`? <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><span style='mso-fareast-language:EN-US'>Can you try to generate a compilable, minimal, self-contained example that demonstrates the problem?<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><span style='mso-fareast-language:EN-US'>Brad<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> gdal-dev <gdal-dev-bounces@lists.osgeo.org> <b>On Behalf Of </b>Ahmet Temiz<br><b>Sent:</b> Sunday, 20 June 2021 5:56 PM<br><b>To:</b> gdal-dev <gdal-dev@lists.osgeo.org><br><b>Subject:</b> [gdal-dev] I couldn't use OGRCreateCoordinateTransformation<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-size:12.0pt'>Hi,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'>..<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'> source.SetWellKnownGeogCS( "EPSG:3857" );<br> dest.SetWellKnownGeogCS( "EPSG:4326" );<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'>OGRCoordinateTransformation* ct = OGRCreateCoordinateTransformation(&source, &dest);<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'>OGRPolygon *poPolygon= ( OGRPolygon *) polyGeometry;<br><br>OGRErr err=poPolygon->transform(ct) ; // it generates this error.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'>ERROR 6: No translation for an empty SRS to PROJ.4 format is known.<o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal><span style='font-size:12.0pt'>I think, this occurs, because I could not assign any SRS value to polygon<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal><span style='font-size:12.0pt'>How can I solve this problem?<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:12.0pt'>regards<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <o:p></o:p></p><div><div><div><div><div><div><div><p class=MsoNormal>Ahmet Temiz<br>Jeoloji Müh.<br>Afet ve Acil Durum Yönetimi Başkanlığı<br>Deprem Dairesi Başkanlığı<br><br><br>________________________<br><br>Ahmet Temiz<br>Geological Eng.<br><br>Disaster and Emergency Management<br>of Presidency<o:p></o:p></p></div></div></div></div></div></div></div></div></div></body></html>