topic Re: CAD data projection issue in Data Management Questions https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300931#M17241 <HTML><HEAD></HEAD><BODY><P>You have to know what coordinate system the data are in.&nbsp; If you don't, you can't <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#//001700000077000000">Define its Coordinate </A>system, nor can you <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Project/00170000007m000000/">Project it</A>&nbsp; You can guess by trying to define it, then see if it lines up with data that you know but my suggestion would be to find out what coordinate the system was recorded in....was it a UTM, MTM, State Plane? WGS84 GCS?&nbsp; the list is endless</P></BODY></HTML> Mon, 15 Sep 2014 07:42:04 GMT DanPatterson_Retired 2014-09-15T07:42:04Z CAD data projection issue https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300930#M17240 <HTML><HEAD></HEAD><BODY><P>Hi There,</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>I am having a problem to define the CAD data coordinate system, Somebody please help and</P><P>one more thing is, it seems like my cad data have no projection as when i uploaded the data in ArcMap </P><P>a warning window popped out saying that "The following data sources you added are missing spatial reference </P><P>information. This data can be drawn in ArcMap, but cannot be projected.</P></BODY></HTML> Mon, 15 Sep 2014 02:52:08 GMT https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300930#M17240 jarrygoidon1 2014-09-15T02:52:08Z Re: CAD data projection issue https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300931#M17241 <HTML><HEAD></HEAD><BODY><P>You have to know what coordinate system the data are in.&nbsp; If you don't, you can't <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#//001700000077000000">Define its Coordinate </A>system, nor can you <A href="http://resources.arcgis.com/en/help/main/10.2/index.html#/Project/00170000007m000000/">Project it</A>&nbsp; You can guess by trying to define it, then see if it lines up with data that you know but my suggestion would be to find out what coordinate the system was recorded in....was it a UTM, MTM, State Plane? WGS84 GCS?&nbsp; the list is endless</P></BODY></HTML> Mon, 15 Sep 2014 07:42:04 GMT https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300931#M17241 DanPatterson_Retired 2014-09-15T07:42:04Z Re: CAD data projection issue https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300932#M17242 <HTML><HEAD></HEAD><BODY><P>Thanks Dan and I think you're right, but I managed to solve this by using georeferencing tools where I used the control points to define the projection of the CAD data. </P></BODY></HTML> Mon, 15 Sep 2014 09:07:36 GMT https://community.esri.com/t5/data-management-questions/cad-data-projection-issue/m-p/300932#M17242 jarrygoidon1 2014-09-15T09:07:36Z