The KRIGE2D Procedure

Syntax

The following statements are available in PROC KRIGE2D.

PROC KRIGE2D options ;: COORDINATES | COORD coordinate-variables ;; GRID grid-options ;; PREDICT | PRED | P predict-options ;; MODEL model-options ;

The PREDICT and MODEL statements are hierarchical; the PREDICT statement is followed by one or more MODEL statements. All the MODEL statements following a PREDICT statement use the variable and neighborhood specifications in that PREDICT statement.

You must specify at least one PREDICT statement and one MODEL statement. You must supply a single COORDINATES statement to identify the x and y coordinate variables in the input data set. You must also specify a single GRID statement to include the grid information.

The following table outlines the options available in PROC KRIGE2D classified by function.

Table 34.1: Options Available in the KRIGE2D Procedure

Task	Statement	Option
Data Set Options
specify input data set	PROC KRIGE2D	DATA=
specify grid data set	GRID	GDATA=
specify model data set	MODEL	MDATA=
write kriging estimates and standard errors	PROC KRIGE2D	OUTEST=
write neighborhood information for each grid point	PROC KRIGE2D	OUTNBHD=
Declaring the Role of Variables
specify the variables to be estimated (kriged)	PREDICT	VAR=
specify the x and y coordinate variables in the DATA= data set	COORDINATES	XC= YC=
specify the x and y coordinate variables in the GDATA= data set	GRID	XC= YC=
Controlling Kriging Neighborhoods
specify the radius of a neighborhood for all grid points	PREDICT	RADIUS=
specify the number of neighbors for all grid points	PREDICT	NUMPOINTS=
specify the maximum of neighbors for all grid points	PREDICT	MAXPOINTS=
specify the minimum of neighbors for all grid points	PREDICT	MINPOINTS=
specify action when maximum not met	PREDICT	NODECREMENT
specify action when minimum not met	PREDICT	NOINCREMENT
Controlling the Semivariogram Model
specify a nugget effect	MODEL	NUGGET=
specify a functional form	MODEL	FORM=
specify a range parameter	MODEL	RANGE=
specify a scale parameter	MODEL	SCALE=
specify an angle for an anisotropic model	MODEL	ANGLE=
specify a minor-major axis ratio for an anisotropic model	MODEL	RATIO=

Syntax

PROC KRIGE2D Statement

COORDINATES Statement

GRID Statement

PREDICT Statement

MODEL Statement