topic DEM interpolation using elevation data with different accuracies in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/dem-interpolation-using-elevation-data-with/m-p/25613#M349 <HTML><HEAD></HEAD><BODY><SPAN>I have a number of point elevation and contour line datasets acquired within the same area using different methods (DGPS, theodolite and photogrammetry). I can work out the vertical accuracy of each method from independent tests. The low accuracy data have a higher resolution than the high accuracy data, so I would like to combine all the datasets to build a DEM. Is there a method that could account for these varying accuracies when interpolating to a grid?</SPAN><BR /><SPAN>I understand the "Topo to Raster" tool, which seems to be the best option when using both point elevations and contour lines, allows for a vertical standard error to be specified for all input layers as a whole, but not for each of them.</SPAN><BR /><SPAN>Any help welcome (even if it means supplementing ArcGIS with R for instance). Many thanks.</SPAN></BODY></HTML> Tue, 04 Dec 2012 22:00:47 GMT ArnaudDuranel 2012-12-04T22:00:47Z DEM interpolation using elevation data with different accuracies https://community.esri.com/t5/arcgis-spatial-analyst-questions/dem-interpolation-using-elevation-data-with/m-p/25613#M349 <HTML><HEAD></HEAD><BODY><SPAN>I have a number of point elevation and contour line datasets acquired within the same area using different methods (DGPS, theodolite and photogrammetry). I can work out the vertical accuracy of each method from independent tests. The low accuracy data have a higher resolution than the high accuracy data, so I would like to combine all the datasets to build a DEM. Is there a method that could account for these varying accuracies when interpolating to a grid?</SPAN><BR /><SPAN>I understand the "Topo to Raster" tool, which seems to be the best option when using both point elevations and contour lines, allows for a vertical standard error to be specified for all input layers as a whole, but not for each of them.</SPAN><BR /><SPAN>Any help welcome (even if it means supplementing ArcGIS with R for instance). Many thanks.</SPAN></BODY></HTML> Tue, 04 Dec 2012 22:00:47 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/dem-interpolation-using-elevation-data-with/m-p/25613#M349 ArnaudDuranel 2012-12-04T22:00:47Z