In this paper, the dimension function of a self-affine generalized scaling set associated with an   $n\,\times \,n$  integral expansive dilation
 $n\,\times \,n$  integral expansive dilation   $A$  is studied. More specifically, we consider the dimension function of an
 $A$  is studied. More specifically, we consider the dimension function of an   $A$ -dilation generalized scaling set
 $A$ -dilation generalized scaling set   $K$  assuming that
 $K$  assuming that   $K$  is a self-affine tile satisfying
 $K$  is a self-affine tile satisfying   $BK\,=\,\left( K\,+\,{{d}_{1}} \right)\,\cup \,\left( K\,+\,{{d}_{2}} \right)$ , where
 $BK\,=\,\left( K\,+\,{{d}_{1}} \right)\,\cup \,\left( K\,+\,{{d}_{2}} \right)$ , where   $B\,=\,{{A}^{t}},\,A$  is an
 $B\,=\,{{A}^{t}},\,A$  is an   $n\,\times \,n$  integral expansive matrix with
 $n\,\times \,n$  integral expansive matrix with   $\left| \det \,A \right|\,=\,2$ , and
 $\left| \det \,A \right|\,=\,2$ , and   ${{d}_{1}},\,{{d}_{2}}\,\in \,{{\mathbb{R}}^{n}}$ . We show that the dimension function of
 ${{d}_{1}},\,{{d}_{2}}\,\in \,{{\mathbb{R}}^{n}}$ . We show that the dimension function of   $K$  must be constant if either
 $K$  must be constant if either   $n\,=1$  or 2 or one of the digits is 0, and that it is bounded by
 $n\,=1$  or 2 or one of the digits is 0, and that it is bounded by   $2\left| K \right|$  for any
 $2\left| K \right|$  for any   $n$ .
 $n$ .