PROC SIM2D: GRID Statement :: SAS/STAT(R) 9.2 User's Guide, Second Edition

The SIM2D Procedure

GRID Statement

GRID grid-options ;

The following options can be used to specify the grid of spatial locations at which to perform the simulations. A single GRID statement is required and is applied to all SIMULATE statements.

There are two basic methods for specifying the grid. You can specify the $\text{[math]}$ and $\text{[math]}$ coordinates explicitly, or they can be read from a SAS data set.

The options for the explicit specification of grid locations are as follows.

X=number

X= $\text{[math]}$

X= $\text{[math]}$ to $\text{[math]}$

X= $\text{[math]}$ to $\text{[math]}$ by $\text{[math]}$

specifies the $\text{[math]}$ coordinate of the grid locations.

Y=number

Y= $\text{[math]}$

Y= $\text{[math]}$ to $\text{[math]}$

Y= $\text{[math]}$ to $\text{[math]}$ by $\text{[math]}$

specifies the $\text{[math]}$ coordinate of the grid locations.

For example, the following two GRID statements are equivalent:

   grid x=1,2,3,4,5  y=0,2,4,6,8,10;

   grid x=1 to 5 y=0 to 10 by 2;

To specify grid locations from a SAS data set, you must provide the name of the data set and the variables containing the values of the $\text{[math]}$ and $\text{[math]}$ coordinates.

GRIDDATA=SAS-data-set

GDATA=SAS-data-set

specifies a SAS data set containing the $\text{[math]}$ and $\text{[math]}$ grid coordinates.

XCOORD=(variable-name)

XC=(variable-name)

gives the name of the variable containing the $\text{[math]}$ coordinate of the grid locations in the GRIDDATA= data set.

YCOORD=(variable-name)

YC=(variable-name)

gives the name of the variable containing the $\text{[math]}$ coordinate of the grid locations in the GRIDDATA= data set.

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