topic Optimize Model? in ArcGIS GeoStatistical Analyst Questions https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180870#M474 <HTML><HEAD></HEAD><BODY><SPAN>In the ArcGIS Geostatistical Wizard, what exactly is the optimize model button doing on the covariance / semivariogram page?&nbsp; I see that is is changing bin size, number of lags, and sill distance.&nbsp; What exactly is occurring?&nbsp; Why is it possible to optimize the model multiple times?</SPAN><BR /><BR /><SPAN>Thanks!</SPAN></BODY></HTML> Tue, 06 Mar 2012 00:07:30 GMT JasonLaura 2012-03-06T00:07:30Z Optimize Model? https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180870#M474 <HTML><HEAD></HEAD><BODY><SPAN>In the ArcGIS Geostatistical Wizard, what exactly is the optimize model button doing on the covariance / semivariogram page?&nbsp; I see that is is changing bin size, number of lags, and sill distance.&nbsp; What exactly is occurring?&nbsp; Why is it possible to optimize the model multiple times?</SPAN><BR /><BR /><SPAN>Thanks!</SPAN></BODY></HTML> Tue, 06 Mar 2012 00:07:30 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180870#M474 JasonLaura 2012-03-06T00:07:30Z Re: Optimize Model? https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180871#M475 <HTML><HEAD></HEAD><BODY><SPAN>The optimize button finds the parameters that result in the lowest root-mean-square error (RMS).&nbsp; In kriging, for a given semivariogram type that you choose (Stable, Exponential, etc), it will optimize the range, nugget, and partial sill to find the lowest RMS.&nbsp; If anisotropy is turned on, it will also find the optimal direction and major/minor semiaxes.</SPAN></BODY></HTML> Tue, 06 Mar 2012 15:18:54 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180871#M475 EricKrause 2012-03-06T15:18:54Z Re: Optimize Model? https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180872#M476 <HTML><HEAD></HEAD><BODY><SPAN>Also keep in mind that the optimization is done </SPAN><SPAN style="font-style:italic;">after</SPAN><SPAN> you do any transformations, trend removal, or declustering.&nbsp; Optimizing the model won't correct any mistakes that you may have made during those previous steps.</SPAN></BODY></HTML> Tue, 06 Mar 2012 19:47:41 GMT https://community.esri.com/t5/arcgis-geostatistical-analyst-questions/optimize-model/m-p/180872#M476 EricKrause 2012-03-06T19:47:41Z