https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046463#M11216 <P>Hi all,</P><P>I performed groundwater head contours using Natural Neighbor interpolation.</P><P>Based on my contour lines, I carried out some hydraulic calculations of my model domain. In order to assess these calculations, I am using error propagation of my observations.</P><P>How can I find out the values' accuracy of the obtained hydraulic heads in my interpolated contours.</P><P>Thank you all in advance,</P><P>Óscar Jiménez Fernández</P> Tue, 13 Apr 2021 17:14:09 GMT OscarJF 2021-04-13T17:14:09Z https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046463#M11216 <P>Hi all,</P><P>I performed groundwater head contours using Natural Neighbor interpolation.</P><P>Based on my contour lines, I carried out some hydraulic calculations of my model domain. In order to assess these calculations, I am using error propagation of my observations.</P><P>How can I find out the values' accuracy of the obtained hydraulic heads in my interpolated contours.</P><P>Thank you all in advance,</P><P>Óscar Jiménez Fernández</P> Tue, 13 Apr 2021 17:14:09 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046463#M11216 OscarJF 2021-04-13T17:14:09Z https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046552#M11217 <P>Why was Natural Neighbors chosen as the interpolation method instead of something like kriging?</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/spatial-analyst/how-kriging-works.htm" target="_blank">How Kriging works—ArcGIS Pro | Documentation</A></P><P>or from the geostatistical analyst</P><P><A href="https://pro.arcgis.com/en/pro-app/latest/tool-reference/geostatistical-analyst/empirical-bayesian-kriging.htm" target="_blank">Empirical Bayesian Kriging (Geostatistical Analyst)—ArcGIS Pro | Documentation</A></P> Tue, 13 Apr 2021 18:59:17 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046552#M11217 DanPatterson 2021-04-13T18:59:17Z https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046682#M11218 <P>Thank you for the answer and the links provided.</P><P>Actually I did not only used Natural Neighbor, but also Bayesian Kriging and IDW interpolations. I know that Kriging is considered the interpolation method with best predictions, but it showed very weird behaviors on my contours, so Natural Neighbor provided the best fit to my field observations.</P><P>But, in order to proceed with my calculations, I need to find out the accuracy of the Z-values in my interpolated contour lines. Does anyone have an idea?</P><P>Thank you in advance,</P><P>Óscar</P> Tue, 13 Apr 2021 22:41:37 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/accuracy-of-interpolation-methods/m-p/1046682#M11218 OscarJF 2021-04-13T22:41:37Z