Using simple kriging to create a probability map
Simple kriging can produce reliable probability maps if the input data is normally distributed.
Steps:
-
Click the Geostatistical Wizard button
on the Geostatistical Analyst toolbar.
- Select Kriging/CoKriging and choose a dataset and attribute field, then click Next.
- Choose Simple kriging and set the Transformation type to Normal Score.
- Set the Output Type to Probability and type a value in the Primary Threshold Value text box or click the Set button and set the threshold on the Classification dialog box.
- Select either the Exceed or NOT Exceed option and click Next.
- Click Next on the Normal Score Transformation dialog box.
- Specify the desired parameters on the Semivariogram/Covariance Modeling dialog box and click Next.
- Specify the desired parameters on the Searching Neighborhood dialog box and click Next.
- Examine the results on the Cross Validation dialog box and click Finish.
- Click OK on the Method Report dialog box.
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Understanding output surface types provides information on the different types of output surfaces available.
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6/24/2013