topic Transform the data set containing zero values while Kriging in ArcGIS GeoStatistical Analyst Questions https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23114#M82 <HTML><HEAD></HEAD><BODY><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I am new to this Kriging interpolation. I need to interpolate the daily rainfall data of 27 rain gauge stations. The data set containing zero values in the attribute for the stations having no rainfall in the same day. And the Histogram is positively skewed. In this case how can i use transformation equation to create the interpolation. I have attached the shape file here. It would be a great help if anyone help me</SPAN></BODY></HTML> Wed, 07 Sep 2011 17:56:06 GMT NischithaV 2011-09-07T17:56:06Z Transform the data set containing zero values while Kriging https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23114#M82 <HTML><HEAD></HEAD><BODY><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I am new to this Kriging interpolation. I need to interpolate the daily rainfall data of 27 rain gauge stations. The data set containing zero values in the attribute for the stations having no rainfall in the same day. And the Histogram is positively skewed. In this case how can i use transformation equation to create the interpolation. I have attached the shape file here. It would be a great help if anyone help me</SPAN></BODY></HTML> Wed, 07 Sep 2011 17:56:06 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23114#M82 NischithaV 2011-09-07T17:56:06Z Re: Transform the data set containing zero values while Kriging https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23115#M83 <HTML><HEAD></HEAD><BODY><SPAN>You probably want to apply a Normal Score transformation.&nbsp; In the Geostatistical Wizard, use Simple Kriging, and the default is a normal score transformation.&nbsp; Try changing the approximation method to Gaussian kernels.</SPAN></BODY></HTML> Wed, 07 Sep 2011 19:06:43 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23115#M83 EricKrause 2011-09-07T19:06:43Z Re: Transform the data set containing zero values while Kriging https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23116#M84 <HTML><HEAD></HEAD><BODY><SPAN>After looking at your data, I don't think there's much you can do.&nbsp; The biggest problems are that your data shows no spatial autocorrelation, and you only have 26 points.&nbsp; The data is also heavily skewed with at least one outlier, and the data is zero-inflated.</SPAN><BR /><BR /><SPAN>Sorry to say, but no interpolation method is going to work with this data.</SPAN></BODY></HTML> Wed, 07 Sep 2011 19:15:06 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/transform-the-data-set-containing-zero-values/m-p/23116#M84 EricKrause 2011-09-07T19:15:06Z