topic Re: need help with surveyor notes and adjusting CAD dwg coordinate system in Data Management Questions https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15229#M781 <HTML><HEAD></HEAD><BODY><SPAN>I'm sorry, but I've never done any of that. </SPAN><BR /><BR /><SPAN>Is there a tutorial somewhere?&nbsp; Where are you getting a combined scaled factor that needs to be put in with the factor given to me in the survey notes?</SPAN><BR /><BR /><BLOCKQUOTE class="jive-quote">Hi, <BR /><BR />One way is to use the CAD file's property page in ArcMap (not ArcCatalog). It should let you apply a scale factor. <BR /><BR />Another way is to apply the scale factor to the Indiana West definition and create a custom coordinate system. <BR /><BR />Assign the Indiana West definition to the CAD data. Now open the coordinate system definition and modify it. You'll have to figure out whether you need to apply this value directly or it's inverse. You want the value that will adjust the state plane coordinates TO the adjusted system. <BR /><BR />You need to apply the SF to 3 projection parameter values:<BR /><BR />false easting<BR />false northing<BR />scale factor<BR /><BR />So if the combined scale factor is 0.9 (let's say) and the projection's scale factor is 0.9998, the new scale factor is 0.89982. Similarly, if the false easting is 100000, the new value is 90000.<BR /><BR />Melita</BLOCKQUOTE></BODY></HTML> Mon, 11 Jul 2011 16:21:08 GMT AmberHawkins 2011-07-11T16:21:08Z need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15227#M779 <HTML><HEAD></HEAD><BODY><SPAN>Hello,</SPAN><BR /><SPAN>I have several CAD dwg's that I have to bring into Arcmap (9.2).&nbsp; All of them were using a local coordinate system.&nbsp; I have the surveyor's notes that say it was based of of the Indiana state plane west by a factor of 0.9999586191...I have no idea how to adjust a coordinate system and I have tried anything I can think of to do so.&nbsp; Any help is appreciated.</SPAN><BR /><SPAN>Thanks!</SPAN></BODY></HTML> Mon, 11 Jul 2011 13:16:51 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15227#M779 AmberHawkins 2011-07-11T13:16:51Z Re: need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15228#M780 <HTML><HEAD></HEAD><BODY><BLOCKQUOTE class="jive-quote">Hello,<BR />I have several CAD dwg's that I have to bring into Arcmap (9.2).&nbsp; All of them were using a local coordinate system.&nbsp; I have the surveyor's notes that say it was based of of the Indiana state plane west by a factor of 0.9999586191...I have no idea how to adjust a coordinate system and I have tried anything I can think of to do so.&nbsp; Any help is appreciated.<BR />Thanks!</BLOCKQUOTE><BR /><SPAN> </SPAN><BR /><SPAN>Hi, </SPAN><BR /><BR /><SPAN>One way is to use the CAD file's property page in ArcMap (not ArcCatalog). It should let you apply a scale factor. </SPAN><BR /><BR /><SPAN>Another way is to apply the scale factor to the Indiana West definition and create a custom coordinate system. </SPAN><BR /><BR /><SPAN>Assign the Indiana West definition to the CAD data. Now open the coordinate system definition and modify it. You'll have to figure out whether you need to apply this value directly or it's inverse. You want the value that will adjust the state plane coordinates TO the adjusted system. </SPAN><BR /><BR /><SPAN>You need to apply the SF to 3 projection parameter values:</SPAN><BR /><BR /><SPAN>false easting</SPAN><BR /><SPAN>false northing</SPAN><BR /><SPAN>scale factor</SPAN><BR /><BR /><SPAN>So if the combined scale factor is 0.9 (let's say) and the projection's scale factor is 0.9998, the new scale factor is 0.89982. Similarly, if the false easting is 100000, the new value is 90000.</SPAN><BR /><BR /><SPAN>Melita</SPAN></BODY></HTML> Mon, 11 Jul 2011 16:10:09 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15228#M780 MelitaKennedy 2011-07-11T16:10:09Z Re: need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15229#M781 <HTML><HEAD></HEAD><BODY><SPAN>I'm sorry, but I've never done any of that. </SPAN><BR /><BR /><SPAN>Is there a tutorial somewhere?&nbsp; Where are you getting a combined scaled factor that needs to be put in with the factor given to me in the survey notes?</SPAN><BR /><BR /><BLOCKQUOTE class="jive-quote">Hi, <BR /><BR />One way is to use the CAD file's property page in ArcMap (not ArcCatalog). It should let you apply a scale factor. <BR /><BR />Another way is to apply the scale factor to the Indiana West definition and create a custom coordinate system. <BR /><BR />Assign the Indiana West definition to the CAD data. Now open the coordinate system definition and modify it. You'll have to figure out whether you need to apply this value directly or it's inverse. You want the value that will adjust the state plane coordinates TO the adjusted system. <BR /><BR />You need to apply the SF to 3 projection parameter values:<BR /><BR />false easting<BR />false northing<BR />scale factor<BR /><BR />So if the combined scale factor is 0.9 (let's say) and the projection's scale factor is 0.9998, the new scale factor is 0.89982. Similarly, if the false easting is 100000, the new value is 90000.<BR /><BR />Melita</BLOCKQUOTE></BODY></HTML> Mon, 11 Jul 2011 16:21:08 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15229#M781 AmberHawkins 2011-07-11T16:21:08Z Re: need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15230#M782 <HTML><HEAD></HEAD><BODY><SPAN>Does anyone have any new suggestions?&nbsp; </SPAN><BR /><BR /><SPAN>Being somewhat new at using CAD Data, I don't know how to do what Ms. Kennedy said.</SPAN><BR /><SPAN>Thanks,</SPAN><BR /><SPAN>Amber</SPAN></BODY></HTML> Wed, 13 Jul 2011 12:43:27 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15230#M782 AmberHawkins 2011-07-13T12:43:27Z Re: need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15231#M783 <HTML><HEAD></HEAD><BODY><BLOCKQUOTE class="jive-quote">Does anyone have any new suggestions?&nbsp; <BR /><BR />Being somewhat new at using CAD Data, I don't know how to do what Ms. Kennedy said.<BR />Thanks,<BR />Amber</BLOCKQUOTE><BR /><SPAN> </SPAN><BR /><SPAN>Hi Amber,</SPAN><BR /><BR /><SPAN>You can check </SPAN><A href="http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?TopicName=Defining_a_CAD_dataset" s_coordinate_system="s_coordinate_system">here</A><SPAN>. Let me know if this doesn't help you out.</SPAN></BODY></HTML> Fri, 15 Jul 2011 21:10:01 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15231#M783 AnantThunuguntla 2011-07-15T21:10:01Z Re: need help with surveyor notes and adjusting CAD dwg coordinate system https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15232#M784 <HTML><HEAD></HEAD><BODY><SPAN>One alternative is to georeference the CAD file (graphically) to existing features in your data frame: </SPAN><BR /><A href="http://video.arcgis.com/watch/1528/overlaying-cad-data-step-three-georeferencing-cad-datasets">http://video.arcgis.com/watch/1528/overlaying-cad-data-step-three-georeferencing-cad-datasets</A><BR /><BR /><SPAN>The entire workflow is discussed here: </SPAN><BR /><A href="http://resources.arcgis.com/en/communities/cad-integration/01rn00000006000000.htm#GUID-5618FCCC-2C38-4E11-9311-5B7972BD7B90">http://resources.arcgis.com/en/communities/cad-integration/01rn00000006000000.htm#GUID-5618FCCC-2C38-4E11-9311-5B7972BD7B90</A><BR /><BR /><SPAN>Hope this helps.</SPAN></BODY></HTML> Wed, 12 Sep 2012 16:08:48 GMT https://community.esri.com/t5/data-management-questions/need-help-with-surveyor-notes-and-adjusting-cad/m-p/15232#M784 AlexLeReaux 2012-09-12T16:08:48Z