<span class="keyword">for</span> i=1:d
0322             scale(i) = sqrt(var(xdata(:,i)));
0323           <span class="keyword">end</span>;
0324         <span class="keyword">end</span>;
0325         inc = 2;
0326     <span class="keyword">end</span>;
0327     <span class="keyword">if</span> (strcmp(varargin{na},<span class="string">'xlim'</span>)) <span class="comment">% 2*d numeric matrix.</span>
0328         xl = varargin{na+1};
0329         inc = 2;
0330     <span class="keyword">end</span>
033