topic Performing some mathematical transformations in Geostatistical Analyst in ArcGIS GeoStatistical Analyst Questions https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/performing-some-mathematical-transformations-in/m-p/67034#M155 <HTML><HEAD></HEAD><BODY><SPAN>Hi guys:</SPAN><BR /><BR /><SPAN>I need to perform some simple mathematical transformations on my cokrigged surface within Geostatistical Analyst. I know this is doable after the surface is exported as a grid and processed in Map Algebra. But I want to stay inside GA and do my computations within the tool. </SPAN><BR /><BR /><SPAN>Anybody got any idea?</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><BR /><SPAN>Orhan</SPAN></BODY></HTML> Mon, 20 Feb 2012 11:56:37 GMT OrhanGUNDUZ 2012-02-20T11:56:37Z Performing some mathematical transformations in Geostatistical Analyst https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/performing-some-mathematical-transformations-in/m-p/67034#M155 <HTML><HEAD></HEAD><BODY><SPAN>Hi guys:</SPAN><BR /><BR /><SPAN>I need to perform some simple mathematical transformations on my cokrigged surface within Geostatistical Analyst. I know this is doable after the surface is exported as a grid and processed in Map Algebra. But I want to stay inside GA and do my computations within the tool. </SPAN><BR /><BR /><SPAN>Anybody got any idea?</SPAN><BR /><BR /><SPAN>Thanks,</SPAN><BR /><BR /><SPAN>Orhan</SPAN></BODY></HTML> Mon, 20 Feb 2012 11:56:37 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/performing-some-mathematical-transformations-in/m-p/67034#M155 OrhanGUNDUZ 2012-02-20T11:56:37Z Re: Performing some mathematical transformations in Geostatistical Analyst https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/performing-some-mathematical-transformations-in/m-p/67035#M156 <HTML><HEAD></HEAD><BODY><SPAN>The back-transformation needs to be built into the kriging step.&nbsp; You can't simply apply a transformation, perform kriging, then apply the back-transformation to the results.&nbsp; In other words, you should stick to the transformations that we've developed and integrated into the kriging: Log, Box-Cox, ArcSin, and Normal Score.</SPAN><BR /><BR /><SPAN>The Normal Score is the most functional type:</SPAN><BR /><A href="http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00310000000v000000.htm">http://help.arcgis.com/en/arcgisdesktop/10.0/help/index.html#//00310000000v000000.htm</A><BR /><BR /><SPAN>For ArcGIS 10, Gaussian Kernels is the most functional approximation type for Normal Score Transformation.</SPAN></BODY></HTML> Mon, 20 Feb 2012 14:08:54 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/performing-some-mathematical-transformations-in/m-p/67035#M156 EricKrause 2012-02-20T14:08:54Z