topic Re: approximate a plane to DEM in Data Management Questions https://community.esri.com/t5/data-management-questions/approximate-a-plane-to-dem/m-p/436124#M24906 <HTML><HEAD></HEAD><BODY><SPAN>I would create a systematic point sample, assign the raster values to the sample and then run a trend analysis with a 1st order polynomial. Here is the ArcGIS help for trend analysis </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000006v000000.htm">http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000006v000000.htm</A><SPAN>. You will likely to play with your sample size. Since you want to create a flat "plane" surface you will likely not need a overly large sample.</SPAN></BODY></HTML> Wed, 06 Feb 2013 20:49:47 GMT JeffreyEvans 2013-02-06T20:49:47Z approximate a plane to DEM https://community.esri.com/t5/data-management-questions/approximate-a-plane-to-dem/m-p/436123#M24905 <HTML><HEAD></HEAD><BODY><SPAN>Hallo,</SPAN><BR /><SPAN>I would like to approximate a plane to my DEM.</SPAN><BR /><SPAN>Is there any a tool or script in ArcGIS to calculate the best fitting plane to my topography?</SPAN><BR /><SPAN>I am working with a 30 meter Raster DEM (TIFF).</SPAN><BR /><SPAN>I would appreciate any help. Thank you very much.</SPAN></BODY></HTML> Wed, 06 Feb 2013 17:37:50 GMT https://community.esri.com/t5/data-management-questions/approximate-a-plane-to-dem/m-p/436123#M24905 LukasCzudowski 2013-02-06T17:37:50Z Re: approximate a plane to DEM https://community.esri.com/t5/data-management-questions/approximate-a-plane-to-dem/m-p/436124#M24906 <HTML><HEAD></HEAD><BODY><SPAN>I would create a systematic point sample, assign the raster values to the sample and then run a trend analysis with a 1st order polynomial. Here is the ArcGIS help for trend analysis </SPAN><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000006v000000.htm">http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//009z0000006v000000.htm</A><SPAN>. You will likely to play with your sample size. Since you want to create a flat "plane" surface you will likely not need a overly large sample.</SPAN></BODY></HTML> Wed, 06 Feb 2013 20:49:47 GMT https://community.esri.com/t5/data-management-questions/approximate-a-plane-to-dem/m-p/436124#M24906 JeffreyEvans 2013-02-06T20:49:47Z