Changing the parameters of a geostatistical layer

After creating a surface with Geostatistical Analyst, you are able to view it in ArcMap. By using the display tools for a geostatistical layer, you may notice that certain areas of the newly created surface do not correspond with your knowledge of the area. Rather than produce a new surface, you might decide to improve the surface by changing the parameter values used to create it. Through Method Properties, you can return to the dialog boxes in the Geostatistical Wizard and change any model parameter and examine the new output results. This method is described in the steps below. Alternatively, model parameter values can be modified using the Set Model Parameter and Create Geostatistical Layer geoprocessing tools.

Etapes :

1. Right-click the geostatistical layer in the ArcMap table of contents and click Method Properties.

   The options available depend on the technique used to create the original surface. The following steps are used when the prediction surface was created by default options (Ordinary Kriging).

2. Click the desired Kriging Type.
3. Click Next on the dialog box.

   Alternatively, change any of the model parameters and click Next on the Semivariogram/Covariance Modeling dialog box or define a new search neighborhood and click Next on the Searching Neighborhood dialog box.

4. Assess the results to determine if the output has improved. If not, repeat steps 2 and 3.
5. Click Finish on the Cross Validation dialog box.
6. Click OK on the Method Report dialog box.