topic arcpy: changing a grid spatial projection in a layout in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/arcpy-changing-a-grid-spatial-projection-in-a/m-p/1557809#M90067 <P><SPAN>I have a UTM grid within my map frame, and I would like to use <STRONG>arcpy</STRONG> to change its projection.</SPAN></P><P>As far as I can see that can only be done with a CIM definition.</P><P>I'm getting an error. Any ideas? Or am I on the wrong path?</P><DIV><DIV><FONT color="#3366FF"><SPAN>....</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>cim_mapframe </SPAN><SPAN>=</SPAN><SPAN> first_mapframe.getDefinition(</SPAN><SPAN>'V3'</SPAN><SPAN>)</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>cim_mapframe.grids[</SPAN><SPAN>0</SPAN><SPAN>].projectedCoordinateSystem </SPAN><SPAN>=</SPAN><SPAN> arcpy.SpatialReference(</SPAN><SPAN>7854</SPAN><SPAN>)</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>first_mapframe.setDefinition(cim_mapframe)</SPAN></FONT></DIV><DIV><FONT color="#3366FF">&nbsp;</FONT></DIV><DIV><SPAN>I get an error when on the setDefinition line.&nbsp;</SPAN></DIV><DIV>&nbsp;</DIV><DIV><PRE><SPAN class="">AttributeError: SpatialReference: Get attribute X does not exist</SPAN></PRE></DIV></DIV> Wed, 13 Nov 2024 00:18:31 GMT PeterKT 2024-11-13T00:18:31Z arcpy: changing a grid spatial projection in a layout https://community.esri.com/t5/arcgis-pro-questions/arcpy-changing-a-grid-spatial-projection-in-a/m-p/1557809#M90067 <P><SPAN>I have a UTM grid within my map frame, and I would like to use <STRONG>arcpy</STRONG> to change its projection.</SPAN></P><P>As far as I can see that can only be done with a CIM definition.</P><P>I'm getting an error. Any ideas? Or am I on the wrong path?</P><DIV><DIV><FONT color="#3366FF"><SPAN>....</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>cim_mapframe </SPAN><SPAN>=</SPAN><SPAN> first_mapframe.getDefinition(</SPAN><SPAN>'V3'</SPAN><SPAN>)</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>cim_mapframe.grids[</SPAN><SPAN>0</SPAN><SPAN>].projectedCoordinateSystem </SPAN><SPAN>=</SPAN><SPAN> arcpy.SpatialReference(</SPAN><SPAN>7854</SPAN><SPAN>)</SPAN></FONT></DIV><DIV><FONT color="#3366FF"><SPAN>first_mapframe.setDefinition(cim_mapframe)</SPAN></FONT></DIV><DIV><FONT color="#3366FF">&nbsp;</FONT></DIV><DIV><SPAN>I get an error when on the setDefinition line.&nbsp;</SPAN></DIV><DIV>&nbsp;</DIV><DIV><PRE><SPAN class="">AttributeError: SpatialReference: Get attribute X does not exist</SPAN></PRE></DIV></DIV> Wed, 13 Nov 2024 00:18:31 GMT https://community.esri.com/t5/arcgis-pro-questions/arcpy-changing-a-grid-spatial-projection-in-a/m-p/1557809#M90067 PeterKT 2024-11-13T00:18:31Z Re: arcpy: changing a grid spatial projection in a layout https://community.esri.com/t5/arcgis-pro-questions/arcpy-changing-a-grid-spatial-projection-in-a/m-p/1625778#M96801 <P>Hi Peter,</P><P>Please try using this...</P><DIV><DIV><SPAN>cim</SPAN><SPAN>.</SPAN><SPAN>grids</SPAN><SPAN>[</SPAN><SPAN>0</SPAN><SPAN>].</SPAN><SPAN>projectedCoordinateSystem</SPAN><SPAN>&nbsp;</SPAN><SPAN>=</SPAN><SPAN>&nbsp;</SPAN><SPAN>{</SPAN><SPAN>'wkid'</SPAN><SPAN>:</SPAN><SPAN>&nbsp;</SPAN><SPAN>7854</SPAN><SPAN>,</SPAN><SPAN>&nbsp;</SPAN><SPAN>'latestWkid'</SPAN><SPAN>:</SPAN><SPAN>&nbsp;</SPAN><SPAN>7854</SPAN><SPAN>}</SPAN></DIV><DIV>&nbsp;</DIV><DIV><SPAN>This work for me.</SPAN></DIV></DIV> Mon, 23 Jun 2025 16:07:38 GMT https://community.esri.com/t5/arcgis-pro-questions/arcpy-changing-a-grid-spatial-projection-in-a/m-p/1625778#M96801 DanielGarcia 2025-06-23T16:07:38Z