Ez kriging software3/7/2024 If the parameter cell size or the environment cell size have not been specified, but the Snap Raster environment has been set, the cell size of the snap raster is used. If the cell size hasn’t been explicitly specified as the parameter value, it is derived from the Cell Size environment if it has been specified. The Output cell size parameter can be defined by a numeric value or obtained from an existing raster dataset. Assuming the kriging errors are normally distributed, there is a 95.5 percent probability that the actual z-value at the cell is the predicted raster value, plus or minus two times the square root of the value in the variance raster. The optional output variance of prediction raster contains the kriging variance at each output raster cell. For Major range, Partial sill, and Nugget, a default value will be calculated internally if nothing is specified. A default value for Lag size is initially set to the default output cell size. The Semivariogram properties allow control of the semivariogram used for kriging. The Universal kriging types assume that there is a structural component present and that the local trend varies from one location to another. High values may indicate a need for more data points. Low values within the optional output variance of prediction raster indicate a high degree of confidence in the predicted value. The speed of execution is dependent on the number of points in the input dataset and the size of the search window. Kriging is a processor-intensive process.
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