amilies, 'y' is omitted.</span>
0030 <span class="comment">% NOTE: x and y are the first two arguments. All other arguments require</span>
0031 <span class="comment">%        the 'name',value notation.</span>
0032 <span class="comment">%</span>
0033 <span class="comment">%    'weights' Prior weights for observations (reciprocal of variance, or</span>
0034 <span class="comment">%           sample size).</span>
0035 <span class="comment">%    'cens' Censoring indicators for hazard rate or censored regre