The KRIGE2D Procedure

COORDINATES Statement

COORDINATES | COORD coordinate-variables;

The following two options specify the names of the variables in the DATA= data set that contains the values of the x and y coordinates of the data.

Only one COORDINATES statement is allowed, and it is applied to all PREDICT statements. In other words, it is assumed that all the VAR= variables in all PREDICT statements have the same x and y coordinates.

This is not a limitation. Since each VAR= variable is processed separately, observations for which the current VAR= variable is missing are excluded. With the next VAR= variable, the entire data are read again, this time excluding missing values in this next variable. Hence, a single run of PROC KRIGE2D can be used for variables measured at different locations without overlap.

XCOORD= (variable-name) XC= (variable-name): specifies the name of the variable that contains the x coordinate of the data locations in the DATA= data set.
YCOORD= (variable-name) YC= (variable-name): specifies the name of the variable that contains the y coordinate of the data locations in the DATA= data set.