topic Re: Converting Adindan UTM (Ethiopia) in New to GIS Questions https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478113#M1320 <HTML><HEAD></HEAD><BODY><P>Thank you for the information Neil!</P><P></P><P>Between Dan and yourself I now understand the "how" and the "why".</P></BODY></HTML> Sun, 21 Feb 2016 18:35:25 GMT LanceStewart 2016-02-21T18:35:25Z Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478107#M1314 <HTML><HEAD></HEAD><BODY><P>Total n00b here. I am having some issues accurately projecting a set of coordinates in WGS 1984. Despite my best efforts the points appear to be 150-200m off (estimate). Maybe someone can guide me towards a resource or solution?</P><P></P><P>I was given a set of coordinates similar to this example:</P><P></P><P>Adindan 37P 68888 E 1292222 N</P><P></P><P>I need to convert to decimal degrees to project in WGS 1984.</P></BODY></HTML> Sat, 20 Feb 2016 00:31:58 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478107#M1314 LanceStewart 2016-02-20T00:31:58Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478108#M1315 <HTML><HEAD></HEAD><BODY><P>what is the datum of the coordinates?&nbsp; looks like a datum shift if they are all relatively the same.&nbsp; You will need more than just the zone, easting and northing to resolve it since you may need to specify the geographic transformation </P></BODY></HTML> Sat, 20 Feb 2016 00:40:29 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478108#M1315 DanPatterson_Retired 2016-02-20T00:40:29Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478109#M1316 <HTML><HEAD></HEAD><BODY><P>Thanks for your response Dan. The spread sheet lists "Adindan" as the Datum.</P></BODY></HTML> Sat, 20 Feb 2016 00:49:05 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478109#M1316 LanceStewart 2016-02-20T00:49:05Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478110#M1317 <HTML><HEAD></HEAD><BODY><P><A href="http://georepository.com/datum_6201/Adindan.html" title="http://georepository.com/datum_6201/Adindan.html">Adindan</A></P><P><A href="http://www.ijmse.org/Volume4/Issue5/paper10.pdf" title="http://www.ijmse.org/Volume4/Issue5/paper10.pdf">http://www.ijmse.org/Volume4/Issue5/paper10.pdf</A> </P><P>plus loads more... just Dr Googled Adindan, which suggests that it is a datum shift, whether there is a geographic transformation for it, you will have to look in the Project tool in the transformation section to see if any are suggested, otherwise, readup on the spheriod used in it as compared to the WGS84 datum.</P></BODY></HTML> Sat, 20 Feb 2016 01:12:23 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478110#M1317 DanPatterson_Retired 2016-02-20T01:12:23Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478111#M1318 <HTML><HEAD></HEAD><BODY><P>Here's the info from ASPRS Clifford Mugnier.</P><P>Which suggests that Adindan is a bit of a misnomer and it is real the Blue Nile datum.</P><P>But there are transforms available in the system.</P><P>See</P><P></P><P><STRONG>Adindan_To_WGS_1984_4</STRONG> WKID=1103 Accuracy=6.000</P><P>Page 2 and 44 of the geographic_transformations.pdf in the ArcGIS documentation folder.</P><P></P><P></P></BODY></HTML> Sat, 20 Feb 2016 08:11:25 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478111#M1318 NeilAyres 2016-02-20T08:11:25Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478112#M1319 <HTML><HEAD></HEAD><BODY><P>Thanks Dan for your suggestions and guidance!</P></BODY></HTML> Sun, 21 Feb 2016 18:08:46 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478112#M1319 LanceStewart 2016-02-21T18:08:46Z Re: Converting Adindan UTM (Ethiopia) https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478113#M1320 <HTML><HEAD></HEAD><BODY><P>Thank you for the information Neil!</P><P></P><P>Between Dan and yourself I now understand the "how" and the "why".</P></BODY></HTML> Sun, 21 Feb 2016 18:35:25 GMT https://community.esri.com/t5/new-to-gis-questions/converting-adindan-utm-ethiopia/m-p/478113#M1320 LanceStewart 2016-02-21T18:35:25Z