Changes and Enhancements to SAS/STAT Software in V7 and V8

KRIGE2D Procedure

The KRIGE2D procedure performs ordinary kriging in two dimensions. Both anisotropic and isotropic semivariogram models can be handled. Four semivariogram models are supported: the gaussian, exponential, spherical, and power models. A single nugget effect is also supported. The locations of kriging estimates can be specified in a GRID statement or read from a SAS data set. The grid specification is most suitable for a regular grid; the data set specification can handle any irregular pattern of points. PROC KRIGE2D writes the kriging estimates and associated standard errors to an output data set.

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