topic Compare the undulation of an interpolated undulation grid with the undulation of a point data set. in ArcGIS Pro Questions https://community.esri.com/t5/arcgis-pro-questions/compare-the-undulation-of-an-interpolated/m-p/1404608#M81498 <P>I have a shapefile with various points that have different attributes. These attributes include x, y and Z values as well as a value that describes the undulation. I also have an undulation raster that was created by interpolating with another point data set. The raster data set specifies the undulation. Now I would like to compare the point data set with the interpolated undulation raster. I would like to determine the deviation and statistical parameters. Can anyone help me?</P><P>I was advised to use the 'Add Surface Information' tool. However, this overwrites the Z value in my point dataset. Renaming the Z value does not help either.</P> Tue, 02 Apr 2024 14:23:22 GMT Sam_Uze 2024-04-02T14:23:22Z Compare the undulation of an interpolated undulation grid with the undulation of a point data set. https://community.esri.com/t5/arcgis-pro-questions/compare-the-undulation-of-an-interpolated/m-p/1404608#M81498 <P>I have a shapefile with various points that have different attributes. These attributes include x, y and Z values as well as a value that describes the undulation. I also have an undulation raster that was created by interpolating with another point data set. The raster data set specifies the undulation. Now I would like to compare the point data set with the interpolated undulation raster. I would like to determine the deviation and statistical parameters. Can anyone help me?</P><P>I was advised to use the 'Add Surface Information' tool. However, this overwrites the Z value in my point dataset. Renaming the Z value does not help either.</P> Tue, 02 Apr 2024 14:23:22 GMT https://community.esri.com/t5/arcgis-pro-questions/compare-the-undulation-of-an-interpolated/m-p/1404608#M81498 Sam_Uze 2024-04-02T14:23:22Z Re: Compare the undulation of an interpolated undulation grid with the undulation of a point data set. https://community.esri.com/t5/arcgis-pro-questions/compare-the-undulation-of-an-interpolated/m-p/1405751#M81499 <P>You can use the Sample tool to get the values of a raster at a set of points:</P><P><A href="https://pro.arcgis.com/en/pro-app/3.1/tool-reference/spatial-analyst/sample.htm" target="_blank">https://pro.arcgis.com/en/pro-app/3.1/tool-reference/spatial-analyst/sample.htm</A></P> Thu, 04 Apr 2024 14:33:44 GMT https://community.esri.com/t5/arcgis-pro-questions/compare-the-undulation-of-an-interpolated/m-p/1405751#M81499 BobBooth1 2024-04-04T14:33:44Z