Other SAS/STAT procedures can be used to fit the response surface, but the RSREG procedure is more specialized. The following statements model a three-factor response surface in PROC RSREG: proc rsreg ...
The SYSLIN procedure in the SAS/ETS product can also fit certain kinds of path models and linear structural equation models. PROC CALIS differs from PROC SYSLIN in that PROC CALIS allows more ...