The SUBMIT statement enables you to substitute the values of a SAS/IML matrix into the statements that are submitted to the SAS System. For example, the following program submits SAS statements that are identical to the preceding example:
YVar = "wind_kts";
XVar = "min_pressure";
submit XVar YVar;
proc reg data=Hurr CORR plots=none;
model &YVar = &XVar;
run;
endsubmit;
You can list the names of SAS/IML matrices on the SUBMIT statement and refer to the contents of those matrices inside the
SUBMIT/ENDSUBMIT block. The syntax is reminiscent of the syntax for macros: an ampersand (&) preceding an expression means
"substitute the value of the expression." However, the substitution takes place before the SUBMIT/ENDSUBMIT block is sent
to the SAS System; no macro variables are actually created. You can substitute character values, as shown in this example,
or numeric values. If x is a vector, then &x lists the elements of x separated by spaces.