},<span class="string">'style'</span>)) <span class="comment">% character string of length d.</span>
0314         style = varargin{na+1};
0315         inc = 2;
0316     <span class="keyword">end</span>;
0317     <span class="keyword">if</span> (strcmp(varargin{na},<span class="string">'scale'</span>)) <span class="comment">% row vector, length 1 or d.</span>
0318         scale = varargin{na+1};
0319         <span class="keyword">if</span> (scale==0)
0320           scale = zeros(1,d);
0321           