topic Re: World Files and MrSID in Data Management Questions https://community.esri.com/t5/data-management-questions/world-files-and-mrsid/m-p/631530#M35666 <HTML><HEAD></HEAD><BODY><SPAN>ArcMap can reproject the sid on the fly if it to match your other data IF it has the correct world file information (either in a world file or in the side header) and IF it has the correct coordinate system definition (in the header or in another file, aux.xml is the one ArcMap creates).&nbsp; You need both.</SPAN><BR /><BR /><SPAN>If you just lack a coordinate system use the Projection Define tool or in ArcCatalog the right click - Properties - Coordinate System tab to give it the correct definition.&nbsp; You don't reproject a sid by modifying the world file or projection definition file directly.&nbsp; After you properly define a coordinate system, you could use the Project tool to change it, but since you can't save the new raster as a sid, and since ArcMap can reproject on the fly, you probably won't want to do that.</SPAN><BR /><BR /><SPAN>If your sid has not been georeferenced, you can do that with the georeferencing toolbar, and that will create a world file and a projection definition.&nbsp; See the ArcGIS help on geoerferencing.</SPAN></BODY></HTML> Mon, 17 Sep 2012 12:41:20 GMT JohnSobetzer 2012-09-17T12:41:20Z World Files and MrSID https://community.esri.com/t5/data-management-questions/world-files-and-mrsid/m-p/631529#M35665 <HTML><HEAD></HEAD><BODY><SPAN>I have a MrSID file that is in WGS84 UTM Zone 11 (meters) and my other data is NAD83 StatePlane (Feet). How do I set up my world (.sdw) file to re-position my SID, or is there a better option without modifying the orginal data? Thanks.</SPAN></BODY></HTML> Fri, 14 Sep 2012 19:27:08 GMT https://community.esri.com/t5/data-management-questions/world-files-and-mrsid/m-p/631529#M35665 RyanWaldkirch 2012-09-14T19:27:08Z Re: World Files and MrSID https://community.esri.com/t5/data-management-questions/world-files-and-mrsid/m-p/631530#M35666 <HTML><HEAD></HEAD><BODY><SPAN>ArcMap can reproject the sid on the fly if it to match your other data IF it has the correct world file information (either in a world file or in the side header) and IF it has the correct coordinate system definition (in the header or in another file, aux.xml is the one ArcMap creates).&nbsp; You need both.</SPAN><BR /><BR /><SPAN>If you just lack a coordinate system use the Projection Define tool or in ArcCatalog the right click - Properties - Coordinate System tab to give it the correct definition.&nbsp; You don't reproject a sid by modifying the world file or projection definition file directly.&nbsp; After you properly define a coordinate system, you could use the Project tool to change it, but since you can't save the new raster as a sid, and since ArcMap can reproject on the fly, you probably won't want to do that.</SPAN><BR /><BR /><SPAN>If your sid has not been georeferenced, you can do that with the georeferencing toolbar, and that will create a world file and a projection definition.&nbsp; See the ArcGIS help on geoerferencing.</SPAN></BODY></HTML> Mon, 17 Sep 2012 12:41:20 GMT https://community.esri.com/t5/data-management-questions/world-files-and-mrsid/m-p/631530#M35666 JohnSobetzer 2012-09-17T12:41:20Z