https://community.esri.com/t5/arcgis-pro-questions/converting-dataset-with-local-coordinates-to-wgs/m-p/1021041#M36512 <P>Hi guys,</P><P>I've imported Revit dataset into the scene with local Swiss coordinates and used <STRONG>define proj</STRONG><SPAN><STRONG>ection</STRONG> to place it properly. The rest of datasets and map should stay in&nbsp;</SPAN><SPAN>WGS 1984 Web Mercator (auxiliary sphere).&nbsp;</SPAN></P><P>Now, I know that when all of the data in one scene is not within one coordinate system, then software and refreshing is really, really slow.</P><P>So my question is - can I convert that dataset from Revit (the one with local coordinate system) to WGS 84 instead of using define projection tool? Is that possible within ArcGIS Pro?</P><P>My goal is to have all of the elements with WGS 84, so the project runs fast.</P><P>Please see attachment if something is not clear.</P> Thu, 28 Jan 2021 16:01:54 GMT MaciejMusialek 2021-01-28T16:01:54Z https://community.esri.com/t5/arcgis-pro-questions/converting-dataset-with-local-coordinates-to-wgs/m-p/1021041#M36512 <P>Hi guys,</P><P>I've imported Revit dataset into the scene with local Swiss coordinates and used <STRONG>define proj</STRONG><SPAN><STRONG>ection</STRONG> to place it properly. The rest of datasets and map should stay in&nbsp;</SPAN><SPAN>WGS 1984 Web Mercator (auxiliary sphere).&nbsp;</SPAN></P><P>Now, I know that when all of the data in one scene is not within one coordinate system, then software and refreshing is really, really slow.</P><P>So my question is - can I convert that dataset from Revit (the one with local coordinate system) to WGS 84 instead of using define projection tool? Is that possible within ArcGIS Pro?</P><P>My goal is to have all of the elements with WGS 84, so the project runs fast.</P><P>Please see attachment if something is not clear.</P> Thu, 28 Jan 2021 16:01:54 GMT https://community.esri.com/t5/arcgis-pro-questions/converting-dataset-with-local-coordinates-to-wgs/m-p/1021041#M36512 MaciejMusialek 2021-01-28T16:01:54Z https://community.esri.com/t5/arcgis-pro-questions/converting-dataset-with-local-coordinates-to-wgs/m-p/1021066#M36516 <P>You have to use the Project tool to make a new file in the coordinate system you desire.&nbsp; You cannot "define" something that it isn't.</P> Thu, 28 Jan 2021 16:25:17 GMT https://community.esri.com/t5/arcgis-pro-questions/converting-dataset-with-local-coordinates-to-wgs/m-p/1021066#M36516 DanPatterson 2021-01-28T16:25:17Z