请教SVM的问题

yxn2000

<P>[nsv, alpha, b0] = svc(X,Y,ker,C)<BR>Support Vector Classification<BR>_____________________________<BR>Constructing ...<BR>??? Subscripted assignment dimension mismatch.</P>
<P>Error in ==&gt; svc at 34<BR>我已经把MATLAB的SVM工具箱加上了，但运行其自带的例子时，出现以上问题，哪位大虾帮帮我。急啊。</P>