topic Re: GTOPO30 correct projection in Data Management Questions https://community.esri.com/t5/data-management-questions/gtopo30-correct-projection/m-p/643578#M36416 <HTML><HEAD></HEAD><BODY><P><A href="http://glcf.umd.edu/data/srtm/">http://glcf.umd.edu/data/srtm/</A> probably in decimal degrees, but you can confirm by adding it to a new, empty data frame (ie no other data), if the coordinates look like they are in decimal degrees, then probably define the data as a GCS WGS 84 in the absence of any other meta data that should have been included in the file or on the download site.</P></BODY></HTML> Tue, 04 Jul 2017 17:12:58 GMT DanPatterson_Retired 2017-07-04T17:12:58Z GTOPO30 correct projection https://community.esri.com/t5/data-management-questions/gtopo30-correct-projection/m-p/643577#M36415 <HTML><HEAD></HEAD><BODY><P>Hi, I have downloaded the following GTOPO30 dem:</P><P></P><P><A class="link-titled" href="http://glcfapp.glcf.umd.edu:8080/esdi/ftp?id=68196" title="http://glcfapp.glcf.umd.edu:8080/esdi/ftp?id=68196">http://glcfapp.glcf.umd.edu:8080/esdi/ftp?id=68196</A>&nbsp;</P><P></P><P>When I add it to ArcGIS I get an "Inconsistent Extent" warning. Location&nbsp;coordinates look strange and I can't zoom in or zoom out.</P><P></P><P>What is the correct projection for this file and how do you fix this to overlay to an SHP file?</P><P></P><P>Thanks for your help.</P></BODY></HTML> Tue, 04 Jul 2017 16:32:41 GMT https://community.esri.com/t5/data-management-questions/gtopo30-correct-projection/m-p/643577#M36415 EduardoMachicado 2017-07-04T16:32:41Z Re: GTOPO30 correct projection https://community.esri.com/t5/data-management-questions/gtopo30-correct-projection/m-p/643578#M36416 <HTML><HEAD></HEAD><BODY><P><A href="http://glcf.umd.edu/data/srtm/">http://glcf.umd.edu/data/srtm/</A> probably in decimal degrees, but you can confirm by adding it to a new, empty data frame (ie no other data), if the coordinates look like they are in decimal degrees, then probably define the data as a GCS WGS 84 in the absence of any other meta data that should have been included in the file or on the download site.</P></BODY></HTML> Tue, 04 Jul 2017 17:12:58 GMT https://community.esri.com/t5/data-management-questions/gtopo30-correct-projection/m-p/643578#M36416 DanPatterson_Retired 2017-07-04T17:12:58Z